diff --git a/DiscUtils/DiscUtils.Fat/FatFileStream.cs b/DiscUtils/DiscUtils.Fat/FatFileStream.cs
index 6605928..5f1183b 100644
--- a/DiscUtils/DiscUtils.Fat/FatFileStream.cs
+++ b/DiscUtils/DiscUtils.Fat/FatFileStream.cs
@@ -20,20 +20,20 @@
 // DEALINGS IN THE SOFTWARE.
 //
 
+using System;
+using System.Collections.Generic;
+using System.IO;
+using DiscUtils.Streams;
+
 namespace DiscUtils.Fat
 {
-    using DiscUtils.Streams;
-    using System;
-    using System.Collections.Generic;
-    using System.IO;
-
     internal class FatFileStream : SparseStream
     {
-        private Directory _dir;
-        private long _dirId;
-        private ClusterStream _stream;
+        private readonly Directory _dir;
+        private readonly long _dirId;
+        private readonly ClusterStream _stream;
 
-        private bool didWrite = false;
+        private bool didWrite;
 
         public FatFileStream(FatFileSystem fileSystem, Directory dir, long fileId, FileAccess access)
         {
@@ -41,16 +41,10 @@ namespace DiscUtils.Fat
             _dirId = fileId;
 
             DirectoryEntry dirEntry = _dir.GetEntry(_dirId);
-            _stream = new ClusterStream(fileSystem, access, (uint)dirEntry.FirstCluster, (uint)dirEntry.FileSize);
+            _stream = new ClusterStream(fileSystem, access, dirEntry.FirstCluster, (uint)dirEntry.FileSize);
             _stream.FirstClusterChanged += FirstClusterAllocatedHandler;
         }
 
-        public override long Position
-        {
-            get { return _stream.Position; }
-            set { _stream.Position = value; }
-        }
-
         public override bool CanRead
         {
             get { return _stream.CanRead; }
@@ -66,20 +60,23 @@ namespace DiscUtils.Fat
             get { return _stream.CanWrite; }
         }
 
+        public override IEnumerable<StreamExtent> Extents
+        {
+            get { return new[] { new StreamExtent(0, Length) }; }
+        }
+
         public override long Length
         {
             get { return _stream.Length; }
         }
 
-        public override IEnumerable<StreamExtent> Extents
+        public override long Position
         {
-            get
-            {
-                return new StreamExtent[] { new StreamExtent(0, Length) };
-            }
+            get { return _stream.Position; }
+            set { _stream.Position = value; }
         }
 
-        public override void Close()
+        protected override void Dispose(bool disposing)
         {
             if (_dir.FileSystem.CanWrite)
             {
@@ -99,7 +96,7 @@ namespace DiscUtils.Fat
                 }
                 finally
                 {
-                    base.Close();
+                    base.Dispose(disposing);
                 }
             }
         }
@@ -138,4 +135,4 @@ namespace DiscUtils.Fat
             _dir.UpdateEntry(_dirId, dirEntry);
         }
     }
-}
+}
\ No newline at end of file
diff --git a/DiscUtils/DiscUtils.Fat/FileName.cs b/DiscUtils/DiscUtils.Fat/FileName.cs
index d4e4767..ab2d58d 100644
--- a/DiscUtils/DiscUtils.Fat/FileName.cs
+++ b/DiscUtils/DiscUtils.Fat/FileName.cs
@@ -20,23 +20,28 @@
 // DEALINGS IN THE SOFTWARE.
 //
 
+using System;
+using System.Text;
+using DiscUtils.Internal;
+
 namespace DiscUtils.Fat
 {
-    using DiscUtils.Internal;
-    using System;
-    using System.Text;
-
     internal sealed class FileName : IEquatable<FileName>
     {
-        public static readonly FileName SelfEntryName = new FileName(new byte[] { 0x2E, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20 }, 0);
-        public static readonly FileName ParentEntryName = new FileName(new byte[] { 0x2E, 0x2E, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20 }, 0);
-        public static readonly FileName Null = new FileName(new byte[] { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, 0);
-
         private const byte SpaceByte = 0x20;
 
-        private static readonly byte[] InvalidBytes = new byte[] { 0x22, 0x2A, 0x2B, 0x2C, 0x2E, 0x2F, 0x3A, 0x3B, 0x3C, 0x3D, 0x3E, 0x3F, 0x5B, 0x5C, 0x5D, 0x7C };
+        public static readonly FileName SelfEntryName =
+            new FileName(new byte[] { 0x2E, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20 }, 0);
 
-        private byte[] _raw;
+        public static readonly FileName ParentEntryName =
+            new FileName(new byte[] { 0x2E, 0x2E, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20 }, 0);
+
+        public static readonly FileName Null =
+            new FileName(new byte[] { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, 0);
+
+        private static readonly byte[] InvalidBytes = { 0x22, 0x2A, 0x2B, 0x2C, 0x2E, 0x2F, 0x3A, 0x3B, 0x3C, 0x3D, 0x3E, 0x3F, 0x5B, 0x5C, 0x5D, 0x7C };
+
+        private readonly byte[] _raw;
 
         public FileName(byte[] data, int offset)
         {
@@ -56,7 +61,7 @@ namespace DiscUtils.Fat
                 byte b = bytes[nameIdx++];
                 if (b < 0x20 || Contains(InvalidBytes, b))
                 {
-                    throw new ArgumentException("Invalid character in file name '" + (char)b + "'", "name");
+                    throw new ArgumentException("Invalid character in file name '" + (char)b + "'", nameof(name));
                 }
 
                 _raw[rawIdx++] = b;
@@ -64,11 +69,11 @@ namespace DiscUtils.Fat
 
             if (rawIdx > 8)
             {
-                throw new ArgumentException("File name too long '" + name + "'", "name");
+                throw new ArgumentException("File name too long '" + name + "'", nameof(name));
             }
-            else if (rawIdx == 0)
+            if (rawIdx == 0)
             {
-                throw new ArgumentException("File name too short '" + name + "'", "name");
+                throw new ArgumentException("File name too short '" + name + "'", nameof(name));
             }
 
             while (rawIdx < 8)
@@ -86,7 +91,7 @@ namespace DiscUtils.Fat
                 byte b = bytes[nameIdx++];
                 if (b < 0x20 || Contains(InvalidBytes, b))
                 {
-                    throw new ArgumentException("Invalid character in file extension '" + (char)b + "'", "name");
+                    throw new ArgumentException("Invalid character in file extension '" + (char)b + "'", nameof(name));
                 }
 
                 _raw[rawIdx++] = b;
@@ -99,10 +104,20 @@ namespace DiscUtils.Fat
 
             if (nameIdx != bytes.Length)
             {
-                throw new ArgumentException("File extension too long '" + name + "'", "name");
+                throw new ArgumentException("File extension too long '" + name + "'", nameof(name));
             }
         }
 
+        public bool Equals(FileName other)
+        {
+            if (other == null)
+            {
+                return false;
+            }
+
+            return CompareRawNames(this, other) == 0;
+        }
+
         public static FileName FromPath(string path, Encoding encoding)
         {
             return new FileName(Utilities.GetFileFromPath(path), encoding);
@@ -162,16 +177,6 @@ namespace DiscUtils.Fat
             return Equals(other as FileName);
         }
 
-        public bool Equals(FileName other)
-        {
-            if (other == null)
-            {
-                return false;
-            }
-
-            return CompareRawNames(this, other) == 0;
-        }
-
         public override int GetHashCode()
         {
             int val = 0x1A8D3C4E;
@@ -190,7 +195,7 @@ namespace DiscUtils.Fat
             {
                 if (a._raw[i] != b._raw[i])
                 {
-                    return (int)a._raw[i] - (int)b._raw[i];
+                    return a._raw[i] - b._raw[i];
                 }
             }
 
@@ -210,4 +215,4 @@ namespace DiscUtils.Fat
             return false;
         }
     }
-}
+}
\ No newline at end of file
diff --git a/DiscUtils/DiscUtils.Fat/Directory.cs b/DiscUtils/DiscUtils.Fat/Modified/Directory.cs
similarity index 100%
rename from DiscUtils/DiscUtils.Fat/Directory.cs
rename to DiscUtils/DiscUtils.Fat/Modified/Directory.cs
diff --git a/DiscUtils/DiscUtils.Fat/FatFileSystem.cs b/DiscUtils/DiscUtils.Fat/Modified/FatFileSystem.cs
similarity index 100%
rename from DiscUtils/DiscUtils.Fat/FatFileSystem.cs
rename to DiscUtils/DiscUtils.Fat/Modified/FatFileSystem.cs