diff --git a/src/LibHac/Fs/Common/Path.cs b/src/LibHac/Fs/Common/Path.cs
index 3fa70880..49af516f 100644
--- a/src/LibHac/Fs/Common/Path.cs
+++ b/src/LibHac/Fs/Common/Path.cs
@@ -19,12 +19,14 @@ public struct PathFlags
     public void AllowEmptyPath() => _value |= 1 << 2;
     public void AllowMountName() => _value |= 1 << 3;
     public void AllowBackslash() => _value |= 1 << 4;
+    public void AllowAllCharacters() => _value |= 1 << 5;
 
     public bool IsWindowsPathAllowed() => (_value & (1 << 0)) != 0;
     public bool IsRelativePathAllowed() => (_value & (1 << 1)) != 0;
     public bool IsEmptyPathAllowed() => (_value & (1 << 2)) != 0;
     public bool IsMountNameAllowed() => (_value & (1 << 3)) != 0;
     public bool IsBackslashAllowed() => (_value & (1 << 4)) != 0;
+    public bool AreAllCharactersAllowed() => (_value & (1 << 5)) != 0;
 }
 
 /// <summary>
diff --git a/src/LibHac/Fs/Common/PathFormatter.cs b/src/LibHac/Fs/Common/PathFormatter.cs
index 24b961f8..08e4ddc2 100644
--- a/src/LibHac/Fs/Common/PathFormatter.cs
+++ b/src/LibHac/Fs/Common/PathFormatter.cs
@@ -13,9 +13,19 @@ namespace LibHac.Fs;
 /// <summary>
 /// Contains functions for working with path formatting and normalization.
 /// </summary>
-/// <remarks>Based on FS 12.1.0 (nnSdk 12.3.1)</remarks>
+/// <remarks>Based on FS 13.1.0 (nnSdk 13.4.0)</remarks>
 public static class PathFormatter
 {
+    private static ReadOnlySpan<byte> InvalidCharacter =>
+        new[] { (byte)':', (byte)'*', (byte)'?', (byte)'<', (byte)'>', (byte)'|' };
+
+    private static ReadOnlySpan<byte> InvalidCharacterForHostName =>
+        new[] { (byte)':', (byte)'*', (byte)'<', (byte)'>', (byte)'|', (byte)'$' };
+
+    private static ReadOnlySpan<byte> InvalidCharacterForMountName =>
+        new[] { (byte)'*', (byte)'?', (byte)'<', (byte)'>', (byte)'|' };
+
+
     [MethodImpl(MethodImplOptions.AggressiveInlining)]
     private static Result CheckHostName(ReadOnlySpan<byte> name)
     {
@@ -24,8 +34,11 @@ public static class PathFormatter
 
         for (int i = 0; i < name.Length; i++)
         {
-            if (name[i] == ':' || name[i] == '$')
-                return ResultFs.InvalidPathFormat.Log();
+            foreach (byte c in InvalidCharacterForHostName)
+            {
+                if (name[i] == c)
+                    return ResultFs.InvalidCharacter.Log();
+            }
         }
 
         return Result.Success;
@@ -41,8 +54,11 @@ public static class PathFormatter
 
         for (int i = 0; i < name.Length; i++)
         {
-            if (name[i] == ':')
-                return ResultFs.InvalidPathFormat.Log();
+            foreach (byte c in InvalidCharacter)
+            {
+                if (name[i] == c)
+                    return ResultFs.InvalidCharacter.Log();
+            }
         }
 
         return Result.Success;
@@ -90,8 +106,11 @@ public static class PathFormatter
 
         for (int i = 0; i < mountLength; i++)
         {
-            if (path.At(i) is (byte)'*' or (byte)'?' or (byte)'<' or (byte)'>' or (byte)'|')
-                return ResultFs.InvalidCharacter.Log();
+            foreach (byte c in InvalidCharacterForMountName)
+            {
+                if (path.At(i) == c)
+                    return ResultFs.InvalidCharacter.Log();
+            }
         }
 
         if (!outMountNameBuffer.IsEmpty)
@@ -150,6 +169,12 @@ public static class PathFormatter
             int winPathLength;
             for (winPathLength = 2; currentPath.At(winPathLength) != NullTerminator; winPathLength++)
             {
+                foreach (byte c in InvalidCharacter)
+                {
+                    if (currentPath[winPathLength] == c)
+                        return ResultFs.InvalidCharacter.Log();
+                }
+
                 if (currentPath[winPathLength] == DirectorySeparator ||
                     currentPath[winPathLength] == AltDirectorySeparator)
                 {
@@ -478,8 +503,11 @@ public static class PathFormatter
             }
         }
 
-        if (PathNormalizer.IsParentDirectoryPathReplacementNeeded(buffer))
-            return ResultFs.DirectoryUnobtainable.Log();
+        if (flags.IsBackslashAllowed() && PathNormalizer.IsParentDirectoryPathReplacementNeeded(buffer))
+        {
+            isNormalized = false;
+            return Result.Success;
+        }
 
         rc = PathUtility.CheckInvalidBackslash(out bool isBackslashContained, buffer,
             flags.IsWindowsPathAllowed() || flags.IsBackslashAllowed());
@@ -491,7 +519,7 @@ public static class PathFormatter
             return Result.Success;
         }
 
-        rc = PathNormalizer.IsNormalized(out isNormalized, out int length, buffer);
+        rc = PathNormalizer.IsNormalized(out isNormalized, out int length, buffer, flags.AreAllCharactersAllowed());
         if (rc.IsFailure()) return rc;
 
         totalLength += length;
@@ -612,7 +640,8 @@ public static class PathFormatter
                 src = srcBufferSlashReplaced.AsSpan(srcOffset);
             }
 
-            rc = PathNormalizer.Normalize(outputBuffer.Slice(currentPos), out _, src, isWindowsPath, isDriveRelative);
+            rc = PathNormalizer.Normalize(outputBuffer.Slice(currentPos), out _, src, isWindowsPath, isDriveRelative,
+                flags.AreAllCharactersAllowed());
             if (rc.IsFailure()) return rc;
 
             return Result.Success;
diff --git a/src/LibHac/Fs/Common/PathNormalizer.cs b/src/LibHac/Fs/Common/PathNormalizer.cs
index 197728dd..91251b29 100644
--- a/src/LibHac/Fs/Common/PathNormalizer.cs
+++ b/src/LibHac/Fs/Common/PathNormalizer.cs
@@ -10,7 +10,7 @@ namespace LibHac.Fs;
 /// <summary>
 /// Contains functions for doing with basic path normalization.
 /// </summary>
-/// <remarks>Based on FS 12.1.0 (nnSdk 12.3.1)</remarks>
+/// <remarks>Based on FS 13.1.0 (nnSdk 13.4.0)</remarks>
 public static class PathNormalizer
 {
     private enum PathState
@@ -25,6 +25,12 @@ public static class PathNormalizer
 
     public static Result Normalize(Span<byte> outputBuffer, out int length, ReadOnlySpan<byte> path, bool isWindowsPath,
         bool isDriveRelativePath)
+    {
+        return Normalize(outputBuffer, out length, path, isWindowsPath, isDriveRelativePath, false);
+    }
+
+    public static Result Normalize(Span<byte> outputBuffer, out int length, ReadOnlySpan<byte> path, bool isWindowsPath,
+        bool isDriveRelativePath, bool allowAllCharacters)
     {
         UnsafeHelpers.SkipParamInit(out length);
 
@@ -32,7 +38,7 @@ public static class PathNormalizer
         int totalLength = 0;
         int i = 0;
 
-        if (!IsSeparator(path.At(0)))
+        if (path.At(0) != DirectorySeparator)
         {
             if (!isDriveRelativePath)
                 return ResultFs.InvalidPathFormat.Log();
@@ -43,6 +49,7 @@ public static class PathNormalizer
         var convertedPath = new RentedArray<byte>();
         try
         {
+            Result rc;
             // Check if parent directory path replacement is needed.
             if (IsParentDirectoryPathReplacementNeeded(currentPath))
             {
@@ -58,20 +65,22 @@ public static class PathNormalizer
 
             bool skipNextSeparator = false;
 
-            while (!IsNul(currentPath.At(i)))
+            while (currentPath.At(i) != NullTerminator)
             {
-                if (IsSeparator(currentPath[i]))
+                if (currentPath[i] == DirectorySeparator)
                 {
                     do
                     {
                         i++;
-                    } while (IsSeparator(currentPath.At(i)));
+                    } while (currentPath.At(i) == DirectorySeparator);
 
-                    if (IsNul(currentPath.At(i)))
+                    if (currentPath.At(i) == NullTerminator)
                         break;
 
                     if (!skipNextSeparator)
                     {
+                        // Note: Nintendo returns TooLongPath in some cases where the output buffer is actually long
+                        // enough to hold the normalized path. e.g. "/aa/bb/." with an output buffer length of 7
                         if (totalLength + 1 == outputBuffer.Length)
                         {
                             outputBuffer[totalLength] = NullTerminator;
@@ -87,8 +96,14 @@ public static class PathNormalizer
                 }
 
                 int dirLen = 0;
-                while (!IsSeparator(currentPath.At(i + dirLen)) && !IsNul(currentPath.At(i + dirLen)))
+                while (currentPath.At(i + dirLen) != DirectorySeparator && currentPath.At(i + dirLen) != NullTerminator)
                 {
+                    if (!allowAllCharacters)
+                    {
+                        rc = CheckInvalidCharacter(currentPath[i + dirLen]);
+                        if (rc.IsFailure()) return rc.Miss();
+                    }
+
                     dirLen++;
                 }
 
@@ -163,12 +178,14 @@ public static class PathNormalizer
             }
 
             // Note: This bug is in the original code. They probably meant to put "totalLength + 1"
-            if (totalLength - 1 > outputBuffer.Length)
+            // The buffer needs to be able to contain the total length of the normalized string plus
+            // one for the null terminator
+            if (outputBuffer.Length < totalLength - 1)
                 return ResultFs.TooLongPath.Log();
 
             outputBuffer[totalLength] = NullTerminator;
 
-            Result rc = IsNormalized(out bool isNormalized, out _, outputBuffer);
+            rc = IsNormalized(out bool isNormalized, out _, outputBuffer, allowAllCharacters);
             if (rc.IsFailure()) return rc;
 
             Assert.SdkAssert(isNormalized);
@@ -200,6 +217,12 @@ public static class PathNormalizer
     /// <see cref="ResultFs.InvalidCharacter"/>: The path contains an invalid character.<br/>
     /// <see cref="ResultFs.InvalidPathFormat"/>: The path is not in a valid format.</returns>
     public static Result IsNormalized(out bool isNormalized, out int length, ReadOnlySpan<byte> path)
+    {
+        return IsNormalized(out isNormalized, out length, path, false);
+    }
+
+    public static Result IsNormalized(out bool isNormalized, out int length, ReadOnlySpan<byte> path,
+        bool allowAllCharacters)
     {
         UnsafeHelpers.SkipParamInit(out isNormalized, out length);
 
@@ -213,7 +236,7 @@ public static class PathNormalizer
 
             pathLength++;
 
-            if (state != PathState.Initial)
+            if (!allowAllCharacters && state != PathState.Initial)
             {
                 Result rc = CheckInvalidCharacter(c);
                 if (rc.IsFailure()) return rc;
@@ -292,7 +315,6 @@ public static class PathNormalizer
         return Result.Success;
     }
 
-
     /// <summary>
     /// Checks if a path begins with / or \ and contains any of these patterns:
     /// "/..\", "\..\", "\../", "\..0" where '0' is the null terminator.
diff --git a/tests/LibHac.Tests/Fs/PathFormatterTests.cs b/tests/LibHac.Tests/Fs/PathFormatterTests.cs
index 0cb382d8..c5d0201c 100644
--- a/tests/LibHac.Tests/Fs/PathFormatterTests.cs
+++ b/tests/LibHac.Tests/Fs/PathFormatterTests.cs
@@ -54,17 +54,18 @@ public class PathFormatterTests
         { @"\\?\c:\", "", @"", ResultFs.InvalidCharacter.Value },
         { @"mount:\\host\share\aa\bb", "M", @"mount:", ResultFs.InvalidCharacter.Value },
         { @"mount:\\host/share\aa\bb", "M", @"mount:", ResultFs.InvalidCharacter.Value },
+        { @"c:\aa\..\..\..\bb", "W", @"c:/bb", Result.Success },
         { @"mount:/\\aa\..\bb", "MW", @"mount:", ResultFs.InvalidPathFormat.Value },
         { @"mount:/c:\aa\..\bb", "MW", @"mount:c:/bb", Result.Success },
         { @"mount:/aa/bb", "MW", @"mount:/aa/bb", Result.Success },
-        { @"/mount:/aa/bb", "MW", @"/mount:/aa/bb", ResultFs.InvalidCharacter.Value },
-        { @"/mount:/aa/bb", "W", @"/mount:/aa/bb", ResultFs.InvalidCharacter.Value },
+        { @"/mount:/aa/bb", "MW", @"/", ResultFs.InvalidCharacter.Value },
+        { @"/mount:/aa/bb", "W", @"/", ResultFs.InvalidCharacter.Value },
         { @"a:aa/../bb", "MW", @"a:aa/bb", Result.Success },
         { @"a:aa\..\bb", "MW", @"a:aa/bb", Result.Success },
-        { @"/a:aa\..\bb", "W", @"/bb", Result.Success },
+        { @"/a:aa\..\bb", "W", @"/", ResultFs.InvalidCharacter.Value },
         { @"\\?\c:\.\aa", "W", @"\\?\c:/aa", Result.Success },
         { @"\\.\c:\.\aa", "W", @"\\.\c:/aa", Result.Success },
-        { @"\\.\mount:\.\aa", "W", @"\\./mount:/aa", ResultFs.InvalidCharacter.Value },
+        { @"\\.\mount:\.\aa", "W", @"\\./", ResultFs.InvalidCharacter.Value },
         { @"\\./.\aa", "W", @"\\./aa", Result.Success },
         { @"\\/aa", "W", @"", ResultFs.InvalidPathFormat.Value },
         { @"\\\aa", "W", @"", ResultFs.InvalidPathFormat.Value },
@@ -73,13 +74,13 @@ public class PathFormatterTests
         { @"\\host\share\path", "W", @"\\host\share/path", Result.Success },
         { @"\\host\share\path\aa\bb\..\cc\.", "W", @"\\host\share/path/aa/cc", Result.Success },
         { @"\\host\", "W", @"", ResultFs.InvalidPathFormat.Value },
-        { @"\\ho$st\share\path", "W", @"", ResultFs.InvalidPathFormat.Value },
-        { @"\\host:\share\path", "W", @"", ResultFs.InvalidPathFormat.Value },
+        { @"\\ho$st\share\path", "W", @"", ResultFs.InvalidCharacter.Value },
+        { @"\\host:\share\path", "W", @"", ResultFs.InvalidCharacter.Value },
         { @"\\..\share\path", "W", @"", ResultFs.InvalidPathFormat.Value },
-        { @"\\host\s:hare\path", "W", @"", ResultFs.InvalidPathFormat.Value },
+        { @"\\host\s:hare\path", "W", @"", ResultFs.InvalidCharacter.Value },
         { @"\\host\.\path", "W", @"", ResultFs.InvalidPathFormat.Value },
         { @"\\host\..\path", "W", @"", ResultFs.InvalidPathFormat.Value },
-        { @"\\host\sha:re", "W", @"", ResultFs.InvalidPathFormat.Value },
+        { @"\\host\sha:re", "W", @"", ResultFs.InvalidCharacter.Value },
         { @".\\host\share", "RW", @"..\\host\share/", Result.Success }
     };
 
@@ -128,14 +129,46 @@ public class PathFormatterTests
         NormalizeImpl(path, pathFlags, 0x301, expectedNormalized, expectedResult);
     }
 
+    public static TheoryData<string, string, string, Result> TestData_Normalize_AllowAllChars => new()
+    {
+        { @"/aa/b:b/cc", "", @"/aa/", ResultFs.InvalidCharacter.Value },
+        { @"/aa/b*b/cc", "", @"/aa/", ResultFs.InvalidCharacter.Value },
+        { @"/aa/b?b/cc", "", @"/aa/", ResultFs.InvalidCharacter.Value },
+        { @"/aa/b<b/cc", "", @"/aa/", ResultFs.InvalidCharacter.Value },
+        { @"/aa/b>b/cc", "", @"/aa/", ResultFs.InvalidCharacter.Value },
+        { @"/aa/b|b/cc", "", @"/aa/", ResultFs.InvalidCharacter.Value },
+        { @"/aa/b:b/cc", "C", @"/aa/b:b/cc", Result.Success },
+        { @"/aa/b*b/cc", "C", @"/aa/b*b/cc", Result.Success },
+        { @"/aa/b?b/cc", "C", @"/aa/b?b/cc", Result.Success },
+        { @"/aa/b<b/cc", "C", @"/aa/b<b/cc", Result.Success },
+        { @"/aa/b>b/cc", "C", @"/aa/b>b/cc", Result.Success },
+        { @"/aa/b|b/cc", "C", @"/aa/b|b/cc", Result.Success },
+        { @"/aa/b'b/cc", "", @"/aa/b'b/cc", Result.Success },
+        { @"/aa/b""b/cc", "", @"/aa/b""b/cc", Result.Success },
+        { @"/aa/b(b/cc", "", @"/aa/b(b/cc", Result.Success },
+        { @"/aa/b)b/cc", "", @"/aa/b)b/cc", Result.Success },
+        { @"/aa/b'b/cc", "C", @"/aa/b'b/cc", Result.Success },
+        { @"/aa/b""b/cc", "C", @"/aa/b""b/cc", Result.Success },
+        { @"/aa/b(b/cc", "C", @"/aa/b(b/cc", Result.Success },
+        { @"/aa/b)b/cc", "C", @"/aa/b)b/cc", Result.Success },
+        { @"mount:/aa/b<b/cc", "MC", @"mount:/aa/b<b/cc", Result.Success },
+        { @"mo>unt:/aa/bb/cc", "MC", @"", ResultFs.InvalidCharacter.Value }
+    };
+
+    [Theory, MemberData(nameof(TestData_Normalize_AllowAllChars))]
+    public static void Normalize_AllowAllChars(string path, string pathFlags, string expectedNormalized, Result expectedResult)
+    {
+        NormalizeImpl(path, pathFlags, 0x301, expectedNormalized, expectedResult);
+    }
+
     public static TheoryData<string, string, string, Result> TestData_Normalize_All => new()
     {
         { @"mount:./aa/bb", "WRM", @"mount:./aa/bb", Result.Success },
         { @"mount:./aa/bb\cc/dd", "WRM", @"mount:./aa/bb/cc/dd", Result.Success },
         { @"mount:./aa/bb\cc/dd", "WRMB", @"mount:./aa/bb/cc/dd", Result.Success },
-        { @"mount:./.c:/aa/bb", "RM", @"mount:./.c:/aa/bb", ResultFs.InvalidCharacter.Value },
-        { @"mount:.c:/aa/bb", "WRM", @"mount:./.c:/aa/bb", ResultFs.InvalidCharacter.Value },
-        { @"mount:./cc:/aa/bb", "WRM", @"mount:./cc:/aa/bb", ResultFs.InvalidCharacter.Value },
+        { @"mount:./.c:/aa/bb", "RM", @"mount:./", ResultFs.InvalidCharacter.Value },
+        { @"mount:.c:/aa/bb", "WRM", @"mount:./", ResultFs.InvalidCharacter.Value },
+        { @"mount:./cc:/aa/bb", "WRM", @"mount:./", ResultFs.InvalidCharacter.Value },
         { @"mount:./\\host\share/aa/bb", "MW", @"mount:", ResultFs.InvalidPathFormat.Value },
         { @"mount:./\\host\share/aa/bb", "WRM", @"mount:.\\host\share/aa/bb", Result.Success },
         { @"mount:.\\host\share/aa/bb", "WRM", @"mount:..\\host\share/aa/bb", Result.Success },
@@ -147,7 +180,8 @@ public class PathFormatterTests
         { @"mount:/aa\bb", "BM", @"mount:/aa\bb", Result.Success },
         { @".//aa/bb", "RW", @"./aa/bb", Result.Success },
         { @"./aa/bb", "R", @"./aa/bb", Result.Success },
-        { @"./c:/aa/bb", "RW", @"./c:/aa/bb", ResultFs.InvalidCharacter.Value }
+        { @"./c:/aa/bb", "RW", @"./", ResultFs.InvalidCharacter.Value },
+        { @"mount:./aa/b:b\cc/dd", "WRMBC", @"mount:./aa/b:b/cc/dd", Result.Success }
     };
 
     [Theory, MemberData(nameof(TestData_Normalize_All))]
@@ -219,7 +253,6 @@ public class PathFormatterTests
 
     public static TheoryData<string, string, bool, int, Result> TestData_IsNormalized_WindowsPath => new()
     {
-        { @"c:/aa/bb", "", false, 0, ResultFs.InvalidPathFormat.Value },
         { @"c:/aa/bb", "", false, 0, ResultFs.InvalidPathFormat.Value },
         { @"c:\aa\bb", "", false, 0, ResultFs.InvalidPathFormat.Value },
         { @"\\host\share", "", false, 0, ResultFs.InvalidPathFormat.Value },
@@ -228,6 +261,7 @@ public class PathFormatterTests
         { @"\\?\c:\", "", false, 0, ResultFs.InvalidPathFormat.Value },
         { @"mount:\\host\share\aa\bb", "M", false, 0, ResultFs.InvalidPathFormat.Value },
         { @"mount:\\host/share\aa\bb", "M", false, 0, ResultFs.InvalidPathFormat.Value },
+        { @"c:\aa\..\..\..\bb", "W", false, 0, Result.Success },
         { @"mount:/\\aa\..\bb", "MW", false, 0, Result.Success },
         { @"mount:/c:\aa\..\bb", "MW", false, 0, Result.Success },
         { @"mount:/aa/bb", "MW", true, 12, Result.Success },
@@ -235,7 +269,7 @@ public class PathFormatterTests
         { @"/mount:/aa/bb", "W", false, 0, ResultFs.InvalidCharacter.Value },
         { @"a:aa/../bb", "MW", false, 8, Result.Success },
         { @"a:aa\..\bb", "MW", false, 0, Result.Success },
-        { @"/a:aa\..\bb", "W", false, 0, ResultFs.DirectoryUnobtainable.Value },
+        { @"/a:aa\..\bb", "W", false, 0, Result.Success },
         { @"\\?\c:\.\aa", "W", false, 0, Result.Success },
         { @"\\.\c:\.\aa", "W", false, 0, Result.Success },
         { @"\\.\mount:\.\aa", "W", false, 0, Result.Success },
@@ -247,13 +281,13 @@ public class PathFormatterTests
         { @"\\host\share\path", "W", false, 0, Result.Success },
         { @"\\host\share\path\aa\bb\..\cc\.", "W", false, 0, Result.Success },
         { @"\\host\", "W", false, 0, ResultFs.InvalidPathFormat.Value },
-        { @"\\ho$st\share\path", "W", false, 0, ResultFs.InvalidPathFormat.Value },
-        { @"\\host:\share\path", "W", false, 0, ResultFs.InvalidPathFormat.Value },
+        { @"\\ho$st\share\path", "W", false, 0, ResultFs.InvalidCharacter.Value },
+        { @"\\host:\share\path", "W", false, 0, ResultFs.InvalidCharacter.Value },
         { @"\\..\share\path", "W", false, 0, ResultFs.InvalidPathFormat.Value },
-        { @"\\host\s:hare\path", "W", false, 0, ResultFs.InvalidPathFormat.Value },
+        { @"\\host\s:hare\path", "W", false, 0, ResultFs.InvalidCharacter.Value },
         { @"\\host\.\path", "W", false, 0, ResultFs.InvalidPathFormat.Value },
         { @"\\host\..\path", "W", false, 0, ResultFs.InvalidPathFormat.Value },
-        { @"\\host\sha:re", "W", false, 0, ResultFs.InvalidPathFormat.Value },
+        { @"\\host\sha:re", "W", false, 0, ResultFs.InvalidCharacter.Value },
         { @".\\host\share", "RW", false, 0, Result.Success }
     };
 
@@ -288,14 +322,14 @@ public class PathFormatterTests
     {
         { @"\aa\bb\..\cc", "", false, 0, ResultFs.InvalidPathFormat.Value },
         { @"\aa\bb\..\cc", "B", false, 0, ResultFs.InvalidPathFormat.Value },
-        { @"/aa\bb\..\cc", "", false, 0, ResultFs.DirectoryUnobtainable.Value },
-        { @"/aa\bb\..\cc", "B", false, 0, ResultFs.DirectoryUnobtainable.Value },
+        { @"/aa\bb\..\cc", "", false, 0, ResultFs.InvalidCharacter.Value },
+        { @"/aa\bb\..\cc", "B", false, 0, Result.Success },
         { @"/aa\bb\cc", "", false, 0, ResultFs.InvalidCharacter.Value },
         { @"/aa\bb\cc", "B", true, 9, Result.Success },
         { @"\\host\share\path\aa\bb\cc", "W", false, 0, Result.Success },
         { @"\\host\share\path\aa\bb\cc", "WB", false, 0, Result.Success },
-        { @"/aa/bb\../cc/..\dd\..\ee/..", "", false, 0, ResultFs.DirectoryUnobtainable.Value },
-        { @"/aa/bb\../cc/..\dd\..\ee/..", "B", false, 0, ResultFs.DirectoryUnobtainable.Value }
+        { @"/aa/bb\../cc/..\dd\..\ee/..", "", false, 0, ResultFs.InvalidCharacter.Value },
+        { @"/aa/bb\../cc/..\dd\..\ee/..", "B", false, 0, Result.Success }
     };
 
     [Theory, MemberData(nameof(TestData_IsNormalized_Backslash))]
@@ -305,6 +339,39 @@ public class PathFormatterTests
         IsNormalizedImpl(path, pathFlags, expectedIsNormalized, expectedLength, expectedResult);
     }
 
+    public static TheoryData<string, string, bool, int, Result> TestData_IsNormalized_AllowAllChars => new()
+    {
+        { @"/aa/b:b/cc", "", false, 0, ResultFs.InvalidCharacter.Value },
+        { @"/aa/b*b/cc", "", false, 0, ResultFs.InvalidCharacter.Value },
+        { @"/aa/b?b/cc", "", false, 0, ResultFs.InvalidCharacter.Value },
+        { @"/aa/b<b/cc", "", false, 0, ResultFs.InvalidCharacter.Value },
+        { @"/aa/b>b/cc", "", false, 0, ResultFs.InvalidCharacter.Value },
+        { @"/aa/b|b/cc", "", false, 0, ResultFs.InvalidCharacter.Value },
+        { @"/aa/b:b/cc", "C", true, 10, Result.Success },
+        { @"/aa/b*b/cc", "C", true, 10, Result.Success },
+        { @"/aa/b?b/cc", "C", true, 10, Result.Success },
+        { @"/aa/b<b/cc", "C", true, 10, Result.Success },
+        { @"/aa/b>b/cc", "C", true, 10, Result.Success },
+        { @"/aa/b|b/cc", "C", true, 10, Result.Success },
+        { @"/aa/b'b/cc", "", true, 10, Result.Success },
+        { @"/aa/b""b/cc", "", true, 10, Result.Success },
+        { @"/aa/b(b/cc", "", true, 10, Result.Success },
+        { @"/aa/b)b/cc", "", true, 10, Result.Success },
+        { @"/aa/b'b/cc", "C", true, 10, Result.Success },
+        { @"/aa/b""b/cc", "C", true, 10, Result.Success },
+        { @"/aa/b(b/cc", "C", true, 10, Result.Success },
+        { @"/aa/b)b/cc", "C", true, 10, Result.Success },
+        { @"mount:/aa/b<b/cc", "MC", true, 16, Result.Success },
+        { @"mo>unt:/aa/bb/cc", "MC", false, 0, ResultFs.InvalidCharacter.Value }
+    };
+
+    [Theory, MemberData(nameof(TestData_IsNormalized_AllowAllChars))]
+    public static void IsNormalized_AllowAllChars(string path, string pathFlags, bool expectedIsNormalized, long expectedLength,
+        Result expectedResult)
+    {
+        IsNormalizedImpl(path, pathFlags, expectedIsNormalized, expectedLength, expectedResult);
+    }
+
     public static TheoryData<string, string, bool, int, Result> TestData_IsNormalized_All => new()
     {
         { @"mount:./aa/bb", "WRM", true, 13, Result.Success },
@@ -324,7 +391,8 @@ public class PathFormatterTests
         { @"mount:/aa\bb", "BM", true, 12, Result.Success },
         { @".//aa/bb", "RW", false, 1, Result.Success },
         { @"./aa/bb", "R", true, 7, Result.Success },
-        { @"./c:/aa/bb", "RW", false, 0, ResultFs.InvalidCharacter.Value }
+        { @"./c:/aa/bb", "RW", false, 0, ResultFs.InvalidCharacter.Value },
+        { @"mount:./aa/b:b\cc/dd", "WRMBC", true, 20, Result.Success }
     };
 
     [Theory, MemberData(nameof(TestData_IsNormalized_All))]
@@ -386,9 +454,14 @@ public class PathFormatterTests
                 case 'W':
                     flags.AllowWindowsPath();
                     break;
+                case 'C':
+                    flags.AllowAllCharacters();
+                    break;
+                default:
+                    throw new NotSupportedException();
             }
         }
 
         return flags;
     }
-}
+}
\ No newline at end of file
diff --git a/tests/LibHac.Tests/Fs/PathNormalizationTestGenerator.cpp b/tests/LibHac.Tests/Fs/PathNormalizationTestGenerator.cpp
index 5c5e41cc..0e875b40 100644
--- a/tests/LibHac.Tests/Fs/PathNormalizationTestGenerator.cpp
+++ b/tests/LibHac.Tests/Fs/PathNormalizationTestGenerator.cpp
@@ -14,7 +14,7 @@ namespace nn::fs::detail {
     bool IsEnabledAccessLog();
 }
 
-// SDK 12
+// SDK 13
 namespace nn::fs {
     bool IsSubPath(const char* path1, const char* path2);
 
@@ -29,12 +29,32 @@ namespace nn::fs {
         void AllowEmptyPath() { value |= (1 << 2); }
         void AllowMountName() { value |= (1 << 3); }
         void AllowBackslash() { value |= (1 << 4); }
+        void AllowAllCharacters() { value |= (1 << 5); }
 
-        const bool IsWindowsPathAllowed() { return (value & (1 << 0)) != 0; }
-        const bool IsRelativePathAllowed() { return (value & (1 << 1)) != 0; }
-        const bool IsEmptyPathAllowed() { return (value & (1 << 2)) != 0; }
-        const bool IsMountNameAllowed() { return (value & (1 << 3)) != 0; }
-        const bool IsBackslashAllowed() { return (value & (1 << 4)) != 0; }
+        bool IsWindowsPathAllowed()const { return (value & (1 << 0)) != 0; }
+        bool IsRelativePathAllowed()const { return (value & (1 << 1)) != 0; }
+        bool IsEmptyPathAllowed()const { return (value & (1 << 2)) != 0; }
+        bool IsMountNameAllowed()const { return (value & (1 << 3)) != 0; }
+        bool IsBackslashAllowed()const { return (value & (1 << 4)) != 0; }
+        bool AreAllCharactersAllowed()const { return (value & (1 << 5)) != 0; }
+    };
+
+    class Path {
+    public:
+        char* m_String;
+        char* m_WriteBuffer;
+        uint64_t m_UniquePtrLength;
+        uint64_t m_WriteBufferLength;
+        bool m_IsNormalized;
+
+        Path();
+        nn::Result Initialize(char const* path);
+        nn::Result InitializeWithNormalization(char const* path);
+        nn::Result InitializeWithReplaceUnc(char const* path);
+        nn::Result Initialize(char const* path, uint64_t pathLength);
+        nn::Result InsertParent(char const* path);
+        nn::Result RemoveChild();
+        nn::Result Normalize(const nn::fs::PathFlags&);
     };
 
     class PathFormatter {
@@ -48,7 +68,9 @@ namespace nn::fs {
     class PathNormalizer {
     public:
         static nn::Result Normalize(char* outBuffer, uint64_t* outLength, const char* path, uint64_t outBufferLength, bool isWindowsPath, bool isDriveRelative);
+        static nn::Result Normalize(char* outBuffer, uint64_t* outLength, const char* path, uint64_t outBufferLength, bool isWindowsPath, bool isDriveRelative, bool allowAllCharacters);
         static nn::Result IsNormalized(bool* outIsNormalized, uint64_t* outNormalizedPathLength, const char* path);
+        static nn::Result IsNormalized(bool* outIsNormalized, uint64_t* outNormalizedPathLength, const char* path, bool allowAllCharacters);
     };
 }
 
@@ -75,6 +97,7 @@ void CreateTest(const char* name, void (*func)(Ts...), const std::array<std::tup
 const char* GetResultName(nn::Result result) {
     switch (result.GetValue()) {
     case 0: return "Result.Success";
+    case 0x177202: return "ResultFs.NotImplemented.Value";
     case 0x2EE402: return "ResultFs.InvalidPath.Value";
     case 0x2EE602: return "ResultFs.TooLongPath.Value";
     case 0x2EE802: return "ResultFs.InvalidCharacter.Value";
@@ -111,12 +134,33 @@ nn::fs::PathFlags GetPathFlags(char const* pathFlags) {
         case 'W':
             flags.AllowWindowsPath();
             break;
+        case 'C':
+            flags.AllowAllCharacters();
+            break;
         }
     }
 
     return flags;
 }
 
+// Escape single double-quotes to double double-quotes for C# verbatim string literals
+void EscapeQuotes(char* dst, char const* src) {
+    while (*src) {
+        if (*src == '"')
+            *dst++ = '"';
+
+        *dst++ = *src++;
+    }
+
+    *dst = 0;
+}
+
+std::string GetEscaped(const char* s) {
+    char escaped[0x200] = { 0 };
+    EscapeQuotes(escaped, s);
+    return std::string(escaped);
+}
+
 static constexpr const auto TestData_PathFormatterNormalize_EmptyPath = make_array(
     // Check AllowEmptyPath option
     std::make_tuple("", ""),
@@ -150,6 +194,7 @@ static constexpr const auto TestData_PathFormatterNormalize_WindowsPath = make_a
     std::make_tuple(R"(mount:\\host\share\aa\bb)", "M"), // Catch instances where the Windows path comes after other parts in the path
     std::make_tuple(R"(mount:\\host/share\aa\bb)", "M"), // And do it again with the UNC path not normalized
 
+    std::make_tuple(R"(c:\aa\..\..\..\bb)", "W"), // Windows paths won't error when trying to navigate to the parent of the root directory
     std::make_tuple(R"(mount:/\\aa\..\bb)", "MW"),
     std::make_tuple(R"(mount:/c:\aa\..\bb)", "MW"),
     std::make_tuple(R"(mount:/aa/bb)", "MW"),
@@ -171,9 +216,9 @@ static constexpr const auto TestData_PathFormatterNormalize_WindowsPath = make_a
     std::make_tuple(R"(\\host\)", "W"), // Share name cannot be empty
     std::make_tuple(R"(\\ho$st\share\path)", "W"), // Invalid character '$' in host name
     std::make_tuple(R"(\\host:\share\path)", "W"), // Invalid character ':' in host name
-    std::make_tuple(R"(\\..\share\path)", "W"), // Host name can't be ".." 
+    std::make_tuple(R"(\\..\share\path)", "W"), // Host name can't be ".."
     std::make_tuple(R"(\\host\s:hare\path)", "W"), // Invalid character ':' in host name
-    std::make_tuple(R"(\\host\.\path)", "W"), // Share name can't be "." 
+    std::make_tuple(R"(\\host\.\path)", "W"), // Share name can't be "."
     std::make_tuple(R"(\\host\..\path)", "W"), // Share name can't be ".."
     std::make_tuple(R"(\\host\sha:re)", "W"), // Invalid share name when nothing follows it
     std::make_tuple(R"(.\\host\share)", "RW") // Can't have a relative Windows path
@@ -204,6 +249,33 @@ static constexpr const auto TestData_PathFormatterNormalize_Backslash = make_arr
     std::make_tuple(R"(/aa/bb\../cc/..\dd\..\ee/..)", "B")
 );
 
+static constexpr const auto TestData_PathFormatterNormalize_AllowAllChars = make_array(
+    std::make_tuple(R"(/aa/b:b/cc)", ""), // Test each of the characters that normally aren't allowed
+    std::make_tuple(R"(/aa/b*b/cc)", ""),
+    std::make_tuple(R"(/aa/b?b/cc)", ""),
+    std::make_tuple(R"(/aa/b<b/cc)", ""),
+    std::make_tuple(R"(/aa/b>b/cc)", ""),
+    std::make_tuple(R"(/aa/b|b/cc)", ""),
+    std::make_tuple(R"(/aa/b:b/cc)", "C"),
+    std::make_tuple(R"(/aa/b*b/cc)", "C"),
+    std::make_tuple(R"(/aa/b?b/cc)", "C"),
+    std::make_tuple(R"(/aa/b<b/cc)", "C"),
+    std::make_tuple(R"(/aa/b>b/cc)", "C"),
+    std::make_tuple(R"(/aa/b|b/cc)", "C"),
+
+    std::make_tuple(R"(/aa/b'b/cc)", ""), // Test some symbols that are normally allowed
+    std::make_tuple(R"(/aa/b"b/cc)", ""),
+    std::make_tuple(R"(/aa/b(b/cc)", ""),
+    std::make_tuple(R"(/aa/b)b/cc)", ""),
+    std::make_tuple(R"(/aa/b'b/cc)", "C"),
+    std::make_tuple(R"(/aa/b"b/cc)", "C"),
+    std::make_tuple(R"(/aa/b(b/cc)", "C"),
+    std::make_tuple(R"(/aa/b)b/cc)", "C"),
+
+    std::make_tuple(R"(mount:/aa/b<b/cc)", "MC"),
+    std::make_tuple(R"(mo>unt:/aa/bb/cc)", "MC") // Invalid character in mount name
+);
+
 static constexpr const auto TestData_PathFormatterNormalize_All = make_array(
     std::make_tuple(R"(mount:./aa/bb)", "WRM"), // Normalized path with both mount name and relative path
     std::make_tuple(R"(mount:./aa/bb\cc/dd)", "WRM"), // Path with backslashes
@@ -215,14 +287,15 @@ static constexpr const auto TestData_PathFormatterNormalize_All = make_array(
     std::make_tuple(R"(mount:./\\host\share/aa/bb)", "WRM"), // These next 3 form a chain where if you normalize one it'll turn into the next
     std::make_tuple(R"(mount:.\\host\share/aa/bb)", "WRM"),
     std::make_tuple(R"(mount:..\\host\share/aa/bb)", "WRM"),
-    std::make_tuple(R"(.\\host\share/aa/bb)", "WRM"), // These next 2 form a chain where if you normalize one it'll turn into the next 
+    std::make_tuple(R"(.\\host\share/aa/bb)", "WRM"), // These next 2 form a chain where if you normalize one it'll turn into the next
     std::make_tuple(R"(..\\host\share/aa/bb)", "WRM"),
     std::make_tuple(R"(mount:\\host\share/aa/bb)", "MW"), // Use a mount name and windows path together
     std::make_tuple(R"(mount:\aa\bb)", "BM"), // Backslashes are never allowed directly after a mount name even with AllowBackslashes
     std::make_tuple(R"(mount:/aa\bb)", "BM"),
     std::make_tuple(R"(.//aa/bb)", "RW"), // Relative path followed by a Windows path won't work
     std::make_tuple(R"(./aa/bb)", "R"),
-    std::make_tuple(R"(./c:/aa/bb)", "RW")
+    std::make_tuple(R"(./c:/aa/bb)", "RW"),
+    std::make_tuple(R"(mount:./aa/b:b\cc/dd)", "WRMBC") // This path is considered normalized but the backslashes still normalize to forward slashes
 );
 
 void CreateTest_PathFormatterNormalize(char const* path, char const* pathFlags) {
@@ -232,7 +305,7 @@ void CreateTest_PathFormatterNormalize(char const* path, char const* pathFlags)
     nn::Result result = nn::fs::PathFormatter::Normalize(normalized, 0x200, path, 0x200, flags);
 
     BufPos += sprintf(&Buf[BufPos], "{@\"%s\", \"%s\", @\"%s\", %s},\n",
-        path, pathFlags, normalized, GetResultName(result));
+        GetEscaped(path).c_str(), pathFlags, GetEscaped(normalized).c_str(), GetResultName(result));
 }
 
 void CreateTest_PathFormatterIsNormalized(char const* path, char const* pathFlags) {
@@ -243,7 +316,7 @@ void CreateTest_PathFormatterIsNormalized(char const* path, char const* pathFlag
     nn::Result result = nn::fs::PathFormatter::IsNormalized(&isNormalized, &normalizedLength, path, flags);
 
     BufPos += sprintf(&Buf[BufPos], "{@\"%s\", \"%s\", %s, %ld, %s},\n",
-        path, pathFlags, BoolStr(isNormalized), normalizedLength, GetResultName(result));
+        GetEscaped(path).c_str(), pathFlags, BoolStr(isNormalized), normalizedLength, GetResultName(result));
 }
 
 static constexpr const auto TestData_PathFormatterNormalize_SmallBuffer = make_array(
@@ -259,68 +332,72 @@ void CreateTest_PathFormatterNormalize_SmallBuffer(char const* path, char const*
     char normalized[0x200] = { 0 };
     nn::fs::PathFlags flags = GetPathFlags(pathFlags);
 
-    svcOutputDebugString(path, strnlen(path, 0x200));
-
     nn::Result result = nn::fs::PathFormatter::Normalize(normalized, bufferSize, path, 0x200, flags);
 
     BufPos += sprintf(&Buf[BufPos], "{@\"%s\", \"%s\", %d, @\"%s\", %s},\n",
-        path, pathFlags, bufferSize, normalized, GetResultName(result));
+        GetEscaped(path).c_str(), pathFlags, bufferSize, GetEscaped(normalized).c_str(), GetResultName(result));
 }
 
 static constexpr const auto TestData_PathNormalizerNormalize = make_array(
-    std::make_tuple("/aa/bb/c/", false, true),
-    std::make_tuple("aa/bb/c/", false, false),
-    std::make_tuple("aa/bb/c/", false, true),
-    std::make_tuple("mount:a/b", false, true),
-    std::make_tuple("/aa/bb/../..", true, false),
-    std::make_tuple("/aa/bb/../../..", true, false),
-    std::make_tuple("/aa/bb/../../..", false, false),
-    std::make_tuple("aa/bb/../../..", true, true),
-    std::make_tuple("aa/bb/../../..", false, true),
-    std::make_tuple("", false, false),
-    std::make_tuple("/", false, false),
-    std::make_tuple("/.", false, false),
-    std::make_tuple("/./", false, false),
-    std::make_tuple("/..", false, false),
-    std::make_tuple("//.", false, false),
-    std::make_tuple("/ ..", false, false),
-    std::make_tuple("/.. /", false, false),
-    std::make_tuple("/. /.", false, false),
-    std::make_tuple("/aa/bb/cc/dd/./.././../..", false, false),
-    std::make_tuple("/aa/bb/cc/dd/./.././../../..", false, false),
-    std::make_tuple("/./aa/./bb/./cc/./dd/.", false, false),
-    std::make_tuple("/aa\\bb/cc", false, false),
-    std::make_tuple("/aa\\bb/cc", false, false),
-    std::make_tuple("/a|/bb/cc", false, false),
-    std::make_tuple("/>a/bb/cc", false, false),
-    std::make_tuple("/aa/.</cc", false, false),
-    std::make_tuple("/aa/..</cc", false, false),
-    std::make_tuple("\\\\aa/bb/cc", false, false),
-    std::make_tuple("\\\\aa\\bb\\cc", false, false),
-    std::make_tuple("/aa/bb/..\\cc", false, false),
-    std::make_tuple("/aa/bb\\..\\cc", false, false),
-    std::make_tuple("/aa/bb\\..", false, false),
-    std::make_tuple("/aa\\bb/../cc", false, false)
+    std::make_tuple("/aa/bb/c/", false, true, false),
+    std::make_tuple("aa/bb/c/", false, false, false),
+    std::make_tuple("aa/bb/c/", false, true, false),
+    std::make_tuple("mount:a/b", false, true, false),
+    std::make_tuple("mo|unt:a/b", false, true, true),
+    std::make_tuple("/aa/bb/../..", true, false, false), // Windows paths won't error when trying to navigate to the parent of the root directory
+    std::make_tuple("/aa/bb/../../..", true, false, false),
+    std::make_tuple("/aa/bb/../../..", false, false, false),
+    std::make_tuple("aa/bb/../../..", true, true, false),
+    std::make_tuple("aa/bb/../../..", false, true, false),
+    std::make_tuple("mount:a/b", false, true, true), // Test allowing invalid characters
+    std::make_tuple("/a|/bb/cc", false, false, true),
+    std::make_tuple("/>a/bb/cc", false, false, true),
+    std::make_tuple("/aa/.</cc", false, false, true),
+    std::make_tuple("/aa/..</cc", false, false, true),
+    std::make_tuple("", false, false, false),
+    std::make_tuple("/", false, false, false),
+    std::make_tuple("/.", false, false, false),
+    std::make_tuple("/./", false, false, false),
+    std::make_tuple("/..", false, false, false),
+    std::make_tuple("//.", false, false, false),
+    std::make_tuple("/ ..", false, false, false),
+    std::make_tuple("/.. /", false, false, false),
+    std::make_tuple("/. /.", false, false, false),
+    std::make_tuple("/aa/bb/cc/dd/./.././../..", false, false, false),
+    std::make_tuple("/aa/bb/cc/dd/./.././../../..", false, false, false),
+    std::make_tuple("/./aa/./bb/./cc/./dd/.", false, false, false),
+    std::make_tuple("/aa\\bb/cc", false, false, false),
+    std::make_tuple("/aa\\bb/cc", false, false, false),
+    std::make_tuple("/a|/bb/cc", false, false, false),
+    std::make_tuple("/>a/bb/cc", false, false, false),
+    std::make_tuple("/aa/.</cc", false, false, false),
+    std::make_tuple("/aa/..</cc", false, false, false),
+    std::make_tuple("\\\\aa/bb/cc", false, false, false),
+    std::make_tuple("\\\\aa\\bb\\cc", false, false, false),
+    std::make_tuple("/aa/bb/..\\cc", false, false, false),
+    std::make_tuple("/aa/bb\\..\\cc", false, false, false),
+    std::make_tuple("/aa/bb\\..", false, false, false),
+    std::make_tuple("/aa\\bb/../cc", false, false, false)
 );
 
-void CreateTest_PathNormalizerNormalize(char const* path, bool isWindowsPath, bool isRelativePath) {
+void CreateTest_PathNormalizerNormalize(char const* path, bool isWindowsPath, bool isRelativePath, bool allowAllCharacters) {
     char normalized[0x200] = { 0 };
     uint64_t normalizedLength = 0;
 
-    nn::Result result = nn::fs::PathNormalizer::Normalize(normalized, &normalizedLength, path, 0x200, isWindowsPath, isRelativePath);
+    nn::Result result = nn::fs::PathNormalizer::Normalize(normalized, &normalizedLength, path, 0x200, isWindowsPath, isRelativePath, allowAllCharacters);
 
-    BufPos += sprintf(&Buf[BufPos], "{@\"%s\", %s, %s, @\"%s\", %ld, %s},\n",
-        path, BoolStr(isWindowsPath), BoolStr(isRelativePath), normalized, normalizedLength, GetResultName(result));
+    BufPos += sprintf(&Buf[BufPos], "{@\"%s\", %s, %s, %s, @\"%s\", %ld, %s},\n",
+        GetEscaped(path).c_str(), BoolStr(isWindowsPath), BoolStr(isRelativePath), BoolStr(allowAllCharacters), GetEscaped(normalized).c_str(), normalizedLength, GetResultName(result));
 }
 
-void CreateTest_PathNormalizerIsNormalized(char const* path, bool isWindowsPath, bool isRelativePath) {
+void CreateTest_PathNormalizerIsNormalized(char const* path, bool isWindowsPath, bool isRelativePath, bool allowAllCharacters) {
     bool isNormalized = false;
     uint64_t normalizedLength = 0;
 
-    nn::Result result = nn::fs::PathNormalizer::IsNormalized(&isNormalized, &normalizedLength, path);
+    nn::Result result = nn::fs::PathNormalizer::IsNormalized(&isNormalized, &normalizedLength, path, allowAllCharacters);
 
-    BufPos += sprintf(&Buf[BufPos], "{@\"%s\", %s, %ld, %s},\n",
-        path, BoolStr(isNormalized), normalizedLength, GetResultName(result));
+    BufPos += sprintf(&Buf[BufPos], "{@\"%s\", %s, %s, %ld, %s},\n",
+        GetEscaped(path).c_str(), BoolStr(allowAllCharacters), BoolStr(isNormalized), normalizedLength, GetResultName(result));
 }
 
 static constexpr const auto TestData_PathNormalizerNormalize_SmallBuffer = make_array(
@@ -350,7 +427,7 @@ void CreateTest_PathNormalizerNormalize_SmallBuffer(char const* path, int buffer
     nn::Result result = nn::fs::PathNormalizer::Normalize(normalized, &normalizedLength, path, bufferSize, false, false);
 
     BufPos += sprintf(&Buf[BufPos], "{@\"%s\", %d, @\"%s\", %ld, %s},\n",
-        path, bufferSize, normalized, normalizedLength, GetResultName(result));
+        GetEscaped(path).c_str(), bufferSize, GetEscaped(normalized).c_str(), normalizedLength, GetResultName(result));
 }
 
 static constexpr const auto TestData_PathUtility_IsSubPath = make_array(
@@ -377,9 +454,62 @@ void CreateTest_PathUtility_IsSubPath(const char* path1, const char* path2) {
     bool result = nn::fs::IsSubPath(path1, path2);
 
     BufPos += sprintf(&Buf[BufPos], "{@\"%s\", @\"%s\", %s},\n",
-        path1, path2, BoolStr(result));
+        GetEscaped(path1).c_str(), GetEscaped(path2).c_str(), BoolStr(result));
 }
 
+void RunTest_Path_RemoveChild() {
+    auto path = nn::fs::Path();
+    nn::Result result = path.InitializeWithReplaceUnc("/aa/bb/./cc");
+    BufPos += sprintf(&Buf[BufPos], "%s\n", GetResultName(result));
+    BufPos += sprintf(&Buf[BufPos], "%s\n", path.m_String);
+
+    result = path.InitializeWithReplaceUnc("//aa/bb");
+    BufPos += sprintf(&Buf[BufPos], "%s\n", GetResultName(result));
+    BufPos += sprintf(&Buf[BufPos], "%s\n", path.m_String);
+
+    result = path.InitializeWithReplaceUnc("@Host://aa/bb");
+    BufPos += sprintf(&Buf[BufPos], "%s\n", GetResultName(result));
+    BufPos += sprintf(&Buf[BufPos], "%s\n", path.m_String);
+
+    result = path.InitializeWithReplaceUnc("mount:///aa/bb");
+    BufPos += sprintf(&Buf[BufPos], "%s\n", GetResultName(result));
+    BufPos += sprintf(&Buf[BufPos], "%s\n", path.m_String);
+
+    result = path.InitializeWithReplaceUnc("//mount:///aa/bb");
+    BufPos += sprintf(&Buf[BufPos], "%s\n", GetResultName(result));
+    BufPos += sprintf(&Buf[BufPos], "%s\n", path.m_String);
+
+    svcOutputDebugString(Buf, BufPos);
+};
+
+void RunTest_Path_InsertParent() {
+    auto path = nn::fs::Path();
+    nn::Result result1 = path.Initialize("/cc/dd");
+    nn::Result result2 = path.InsertParent("/aa/bb");
+    BufPos += sprintf(&Buf[BufPos], "%s\n%s\n%s\n", GetResultName(result1), GetResultName(result2), path.m_String);
+
+    result1 = path.Initialize("/cc/dd");
+    result2 = path.InsertParent("aa/bb");
+    BufPos += sprintf(&Buf[BufPos], "%s\n%s\n%s\n", GetResultName(result1), GetResultName(result2), path.m_String);
+
+    result1 = path.Initialize("/cc/dd/");
+    result2 = path.InsertParent("aa/bb");
+    BufPos += sprintf(&Buf[BufPos], "%s\n%s\n%s\n", GetResultName(result1), GetResultName(result2), path.m_String);
+
+    result1 = path.Initialize("/cc/dd/");
+    result2 = path.InsertParent("/aa/bb");
+    BufPos += sprintf(&Buf[BufPos], "%s\n%s\n%s\n", GetResultName(result1), GetResultName(result2), path.m_String);
+
+    result1 = path.Initialize("/cc/dd/");
+    result2 = path.Normalize(GetPathFlags(""));
+    BufPos += sprintf(&Buf[BufPos], "%s\n%s\n%s\n", GetResultName(result1), GetResultName(result2), BoolStr(path.m_IsNormalized));
+
+    result2 = path.InsertParent("/aa/../bb");
+    BufPos += sprintf(&Buf[BufPos], "%s\n%s\n%s\n", GetResultName(result2), BoolStr(path.m_IsNormalized), path.m_String);
+
+    svcOutputDebugString(Buf, BufPos);
+};
+
 extern "C" void nnMain(void) {
     // nn::fs::detail::IsEnabledAccessLog(); // Adds the sdk version to the output
 
@@ -388,6 +518,7 @@ extern "C" void nnMain(void) {
     CreateTest("TestData_PathFormatter_Normalize_WindowsPath", CreateTest_PathFormatterNormalize, TestData_PathFormatterNormalize_WindowsPath);
     CreateTest("TestData_PathFormatter_Normalize_RelativePath", CreateTest_PathFormatterNormalize, TestData_PathFormatterNormalize_RelativePath);
     CreateTest("TestData_PathFormatter_Normalize_Backslash", CreateTest_PathFormatterNormalize, TestData_PathFormatterNormalize_Backslash);
+    CreateTest("TestData_PathFormatter_Normalize_AllowAllChars", CreateTest_PathFormatterNormalize, TestData_PathFormatterNormalize_AllowAllChars);
     CreateTest("TestData_PathFormatter_Normalize_All", CreateTest_PathFormatterNormalize, TestData_PathFormatterNormalize_All);
     CreateTest("TestData_PathFormatter_Normalize_SmallBuffer", CreateTest_PathFormatterNormalize_SmallBuffer, TestData_PathFormatterNormalize_SmallBuffer);
 
@@ -396,6 +527,7 @@ extern "C" void nnMain(void) {
     CreateTest("TestData_PathFormatter_IsNormalized_WindowsPath", CreateTest_PathFormatterIsNormalized, TestData_PathFormatterNormalize_WindowsPath);
     CreateTest("TestData_PathFormatter_IsNormalized_RelativePath", CreateTest_PathFormatterIsNormalized, TestData_PathFormatterNormalize_RelativePath);
     CreateTest("TestData_PathFormatter_IsNormalized_Backslash", CreateTest_PathFormatterIsNormalized, TestData_PathFormatterNormalize_Backslash);
+    CreateTest("TestData_PathFormatter_IsNormalized_AllowAllChars", CreateTest_PathFormatterIsNormalized, TestData_PathFormatterNormalize_AllowAllChars);
     CreateTest("TestData_PathFormatter_IsNormalized_All", CreateTest_PathFormatterIsNormalized, TestData_PathFormatterNormalize_All);
 
     CreateTest("TestData_PathNormalizer_Normalize", CreateTest_PathNormalizerNormalize, TestData_PathNormalizerNormalize);
diff --git a/tests/LibHac.Tests/Fs/PathNormalizerTests.cs b/tests/LibHac.Tests/Fs/PathNormalizerTests.cs
index 064c92e5..2145c13e 100644
--- a/tests/LibHac.Tests/Fs/PathNormalizerTests.cs
+++ b/tests/LibHac.Tests/Fs/PathNormalizerTests.cs
@@ -9,51 +9,57 @@ namespace LibHac.Tests.Fs;
 
 public class PathNormalizerTests
 {
-    public static TheoryData<string, bool, bool, string, long, Result> TestData_Normalize => new()
+    public static TheoryData<string, bool, bool, bool, string, long, Result> TestData_Normalize => new()
     {
-        { @"/aa/bb/c/", false, true, @"/aa/bb/c", 8, Result.Success },
-        { @"aa/bb/c/", false, false, @"", 0, ResultFs.InvalidPathFormat.Value },
-        { @"aa/bb/c/", false, true, @"/aa/bb/c", 8, Result.Success },
-        { @"mount:a/b", false, true, @"/mount:a/b", 0, ResultFs.InvalidCharacter.Value },
-        { @"/aa/bb/../..", true, false, @"/", 1, Result.Success },
-        { @"/aa/bb/../../..", true, false, @"/", 1, Result.Success },
-        { @"/aa/bb/../../..", false, false, @"/aa/bb/", 0, ResultFs.DirectoryUnobtainable.Value },
-        { @"aa/bb/../../..", true, true, @"/", 1, Result.Success },
-        { @"aa/bb/../../..", false, true, @"/aa/bb/", 0, ResultFs.DirectoryUnobtainable.Value },
-        { @"", false, false, @"", 0, ResultFs.InvalidPathFormat.Value },
-        { @"/", false, false, @"/", 1, Result.Success },
-        { @"/.", false, false, @"/", 1, Result.Success },
-        { @"/./", false, false, @"/", 1, Result.Success },
-        { @"/..", false, false, @"/", 0, ResultFs.DirectoryUnobtainable.Value },
-        { @"//.", false, false, @"/", 1, Result.Success },
-        { @"/ ..", false, false, @"/ ..", 4, Result.Success },
-        { @"/.. /", false, false, @"/.. ", 4, Result.Success },
-        { @"/. /.", false, false, @"/. ", 3, Result.Success },
-        { @"/aa/bb/cc/dd/./.././../..", false, false, @"/aa", 3, Result.Success },
-        { @"/aa/bb/cc/dd/./.././../../..", false, false, @"/", 1, Result.Success },
-        { @"/./aa/./bb/./cc/./dd/.", false, false, @"/aa/bb/cc/dd", 12, Result.Success },
-        { @"/aa\bb/cc", false, false, @"/aa\bb/cc", 9, Result.Success },
-        { @"/aa\bb/cc", false, false, @"/aa\bb/cc", 9, Result.Success },
-        { @"/a|/bb/cc", false, false, @"/a|/bb/cc", 0, ResultFs.InvalidCharacter.Value },
-        { @"/>a/bb/cc", false, false, @"/>a/bb/cc", 0, ResultFs.InvalidCharacter.Value },
-        { @"/aa/.</cc", false, false, @"/aa/.</cc", 0, ResultFs.InvalidCharacter.Value },
-        { @"/aa/..</cc", false, false, @"/aa/..</cc", 0, ResultFs.InvalidCharacter.Value },
-        { @"\\aa/bb/cc", false, false, @"", 0, ResultFs.InvalidPathFormat.Value },
-        { @"\\aa\bb\cc", false, false, @"", 0, ResultFs.InvalidPathFormat.Value },
-        { @"/aa/bb/..\cc", false, false, @"/aa/cc", 6, Result.Success },
-        { @"/aa/bb\..\cc", false, false, @"/aa/cc", 6, Result.Success },
-        { @"/aa/bb\..", false, false, @"/aa", 3, Result.Success },
-        { @"/aa\bb/../cc", false, false, @"/cc", 3, Result.Success }
+        { @"/aa/bb/c/", false, true, false, @"/aa/bb/c", 8, Result.Success },
+        { @"aa/bb/c/", false, false, false, @"", 0, ResultFs.InvalidPathFormat.Value },
+        { @"aa/bb/c/", false, true, false, @"/aa/bb/c", 8, Result.Success },
+        { @"mount:a/b", false, true, false, @"/", 0, ResultFs.InvalidCharacter.Value },
+        { @"mo|unt:a/b", false, true, true, @"/mo|unt:a/b", 11, Result.Success },
+        { @"/aa/bb/../..", true, false, false, @"/", 1, Result.Success },
+        { @"/aa/bb/../../..", true, false, false, @"/", 1, Result.Success },
+        { @"/aa/bb/../../..", false, false, false, @"/aa/bb/", 0, ResultFs.DirectoryUnobtainable.Value },
+        { @"aa/bb/../../..", true, true, false, @"/", 1, Result.Success },
+        { @"aa/bb/../../..", false, true, false, @"/aa/bb/", 0, ResultFs.DirectoryUnobtainable.Value },
+        { @"mount:a/b", false, true, true, @"/mount:a/b", 10, Result.Success },
+        { @"/a|/bb/cc", false, false, true, @"/a|/bb/cc", 9, Result.Success },
+        { @"/>a/bb/cc", false, false, true, @"/>a/bb/cc", 9, Result.Success },
+        { @"/aa/.</cc", false, false, true, @"/aa/.</cc", 9, Result.Success },
+        { @"/aa/..</cc", false, false, true, @"/aa/..</cc", 10, Result.Success },
+        { @"", false, false, false, @"", 0, ResultFs.InvalidPathFormat.Value },
+        { @"/", false, false, false, @"/", 1, Result.Success },
+        { @"/.", false, false, false, @"/", 1, Result.Success },
+        { @"/./", false, false, false, @"/", 1, Result.Success },
+        { @"/..", false, false, false, @"/", 0, ResultFs.DirectoryUnobtainable.Value },
+        { @"//.", false, false, false, @"/", 1, Result.Success },
+        { @"/ ..", false, false, false, @"/ ..", 4, Result.Success },
+        { @"/.. /", false, false, false, @"/.. ", 4, Result.Success },
+        { @"/. /.", false, false, false, @"/. ", 3, Result.Success },
+        { @"/aa/bb/cc/dd/./.././../..", false, false, false, @"/aa", 3, Result.Success },
+        { @"/aa/bb/cc/dd/./.././../../..", false, false, false, @"/", 1, Result.Success },
+        { @"/./aa/./bb/./cc/./dd/.", false, false, false, @"/aa/bb/cc/dd", 12, Result.Success },
+        { @"/aa\bb/cc", false, false, false, @"/aa\bb/cc", 9, Result.Success },
+        { @"/aa\bb/cc", false, false, false, @"/aa\bb/cc", 9, Result.Success },
+        { @"/a|/bb/cc", false, false, false, @"/", 0, ResultFs.InvalidCharacter.Value },
+        { @"/>a/bb/cc", false, false, false, @"/", 0, ResultFs.InvalidCharacter.Value },
+        { @"/aa/.</cc", false, false, false, @"/aa/", 0, ResultFs.InvalidCharacter.Value },
+        { @"/aa/..</cc", false, false, false, @"/aa/", 0, ResultFs.InvalidCharacter.Value },
+        { @"\\aa/bb/cc", false, false, false, @"", 0, ResultFs.InvalidPathFormat.Value },
+        { @"\\aa\bb\cc", false, false, false, @"", 0, ResultFs.InvalidPathFormat.Value },
+        { @"/aa/bb/..\cc", false, false, false, @"/aa/cc", 6, Result.Success },
+        { @"/aa/bb\..\cc", false, false, false, @"/aa/cc", 6, Result.Success },
+        { @"/aa/bb\..", false, false, false, @"/aa", 3, Result.Success },
+        { @"/aa\bb/../cc", false, false, false, @"/cc", 3, Result.Success }
     };
 
     [Theory, MemberData(nameof(TestData_Normalize))]
-    public static void Normalize(string path, bool isWindowsPath, bool isDriveRelativePath, string expectedNormalized,
-        long expectedLength, Result expectedResult)
+    public static void Normalize(string path, bool isWindowsPath, bool isDriveRelativePath, bool allowAllCharacters,
+        string expectedNormalized, long expectedLength, Result expectedResult)
     {
         byte[] buffer = new byte[0x301];
 
         Result result = PathNormalizer.Normalize(buffer, out int normalizedLength, path.ToU8Span(), isWindowsPath,
-            isDriveRelativePath);
+            isDriveRelativePath, allowAllCharacters);
 
         Assert.Equal(expectedResult, result);
         Assert.Equal(expectedNormalized, StringUtils.Utf8ZToString(buffer));
@@ -93,47 +99,53 @@ public class PathNormalizerTests
         Assert.Equal(expectedLength, normalizedLength);
     }
 
-    public static TheoryData<string, bool, long, Result> TestData_IsNormalized => new()
+    public static TheoryData<string, bool, bool, long, Result> TestData_IsNormalized => new()
     {
-        { @"/aa/bb/c/", false, 9, Result.Success },
-        { @"aa/bb/c/", false, 0, ResultFs.InvalidPathFormat.Value },
-        { @"aa/bb/c/", false, 0, ResultFs.InvalidPathFormat.Value },
-        { @"mount:a/b", false, 0, ResultFs.InvalidPathFormat.Value },
-        { @"/aa/bb/../..", false, 0, Result.Success },
-        { @"/aa/bb/../../..", false, 0, Result.Success },
-        { @"/aa/bb/../../..", false, 0, Result.Success },
-        { @"aa/bb/../../..", false, 0, ResultFs.InvalidPathFormat.Value },
-        { @"aa/bb/../../..", false, 0, ResultFs.InvalidPathFormat.Value },
-        { @"", false, 0, ResultFs.InvalidPathFormat.Value },
-        { @"/", true, 1, Result.Success },
-        { @"/.", false, 2, Result.Success },
-        { @"/./", false, 0, Result.Success },
-        { @"/..", false, 3, Result.Success },
-        { @"//.", false, 0, Result.Success },
-        { @"/ ..", true, 4, Result.Success },
-        { @"/.. /", false, 5, Result.Success },
-        { @"/. /.", false, 5, Result.Success },
-        { @"/aa/bb/cc/dd/./.././../..", false, 0, Result.Success },
-        { @"/aa/bb/cc/dd/./.././../../..", false, 0, Result.Success },
-        { @"/./aa/./bb/./cc/./dd/.", false, 0, Result.Success },
-        { @"/aa\bb/cc", true, 9, Result.Success },
-        { @"/aa\bb/cc", true, 9, Result.Success },
-        { @"/a|/bb/cc", false, 0, ResultFs.InvalidCharacter.Value },
-        { @"/>a/bb/cc", false, 0, ResultFs.InvalidCharacter.Value },
-        { @"/aa/.</cc", false, 0, ResultFs.InvalidCharacter.Value },
-        { @"/aa/..</cc", false, 0, ResultFs.InvalidCharacter.Value },
-        { @"\\aa/bb/cc", false, 0, ResultFs.InvalidPathFormat.Value },
-        { @"\\aa\bb\cc", false, 0, ResultFs.InvalidPathFormat.Value },
-        { @"/aa/bb/..\cc", true, 12, Result.Success },
-        { @"/aa/bb\..\cc", true, 12, Result.Success },
-        { @"/aa/bb\..", true, 9, Result.Success },
-        { @"/aa\bb/../cc", false, 0, Result.Success }
+        { @"/aa/bb/c/", false, false, 9, Result.Success },
+        { @"aa/bb/c/", false, false, 0, ResultFs.InvalidPathFormat.Value },
+        { @"aa/bb/c/", false, false, 0, ResultFs.InvalidPathFormat.Value },
+        { @"mount:a/b", false, false, 0, ResultFs.InvalidPathFormat.Value },
+        { @"mo|unt:a/b", true, false, 0, ResultFs.InvalidPathFormat.Value },
+        { @"/aa/bb/../..", false, false, 0, Result.Success },
+        { @"/aa/bb/../../..", false, false, 0, Result.Success },
+        { @"/aa/bb/../../..", false, false, 0, Result.Success },
+        { @"aa/bb/../../..", false, false, 0, ResultFs.InvalidPathFormat.Value },
+        { @"aa/bb/../../..", false, false, 0, ResultFs.InvalidPathFormat.Value },
+        { @"mount:a/b", true, false, 0, ResultFs.InvalidPathFormat.Value },
+        { @"/a|/bb/cc", true, true, 9, Result.Success },
+        { @"/>a/bb/cc", true, true, 9, Result.Success },
+        { @"/aa/.</cc", true, true, 9, Result.Success },
+        { @"/aa/..</cc", true, true, 10, Result.Success },
+        { @"", false, false, 0, ResultFs.InvalidPathFormat.Value },
+        { @"/", false, true, 1, Result.Success },
+        { @"/.", false, false, 2, Result.Success },
+        { @"/./", false, false, 0, Result.Success },
+        { @"/..", false, false, 3, Result.Success },
+        { @"//.", false, false, 0, Result.Success },
+        { @"/ ..", false, true, 4, Result.Success },
+        { @"/.. /", false, false, 5, Result.Success },
+        { @"/. /.", false, false, 5, Result.Success },
+        { @"/aa/bb/cc/dd/./.././../..", false, false, 0, Result.Success },
+        { @"/aa/bb/cc/dd/./.././../../..", false, false, 0, Result.Success },
+        { @"/./aa/./bb/./cc/./dd/.", false, false, 0, Result.Success },
+        { @"/aa\bb/cc", false, true, 9, Result.Success },
+        { @"/aa\bb/cc", false, true, 9, Result.Success },
+        { @"/a|/bb/cc", false, false, 0, ResultFs.InvalidCharacter.Value },
+        { @"/>a/bb/cc", false, false, 0, ResultFs.InvalidCharacter.Value },
+        { @"/aa/.</cc", false, false, 0, ResultFs.InvalidCharacter.Value },
+        { @"/aa/..</cc", false, false, 0, ResultFs.InvalidCharacter.Value },
+        { @"\\aa/bb/cc", false, false, 0, ResultFs.InvalidPathFormat.Value },
+        { @"\\aa\bb\cc", false, false, 0, ResultFs.InvalidPathFormat.Value },
+        { @"/aa/bb/..\cc", false, true, 12, Result.Success },
+        { @"/aa/bb\..\cc", false, true, 12, Result.Success },
+        { @"/aa/bb\..", false, true, 9, Result.Success },
+        { @"/aa\bb/../cc", false, false, 0, Result.Success }
     };
 
     [Theory, MemberData(nameof(TestData_IsNormalized))]
-    public static void IsNormalized(string path, bool expectedIsNormalized, long expectedLength, Result expectedResult)
+    public static void IsNormalized(string path, bool allowAllCharacters, bool expectedIsNormalized, long expectedLength, Result expectedResult)
     {
-        Result result = PathNormalizer.IsNormalized(out bool isNormalized, out int length, path.ToU8Span());
+        Result result = PathNormalizer.IsNormalized(out bool isNormalized, out int length, path.ToU8Span(), allowAllCharacters);
 
         Assert.Equal(expectedResult, result);
         Assert.Equal(expectedLength, length);
@@ -143,4 +155,4 @@ public class PathNormalizerTests
             Assert.Equal(expectedIsNormalized, isNormalized);
         }
     }
-}
+}
\ No newline at end of file