diff --git a/src/com/bytezone/diskbrowser/disk/DiskFactory.java b/src/com/bytezone/diskbrowser/disk/DiskFactory.java
index bd84d22..f045057 100755
--- a/src/com/bytezone/diskbrowser/disk/DiskFactory.java
+++ b/src/com/bytezone/diskbrowser/disk/DiskFactory.java
@@ -187,7 +187,15 @@ public class DiskFactory
         //        System.out.printf ("Total files: %d%n", totalFiles);
         if (totalFiles == 0)
           return null;
-        nuFX.getDiskBuffer ();
+
+        File tmp = File.createTempFile (suffix, null);
+        FileOutputStream fos = new FileOutputStream (tmp);
+        fos.write (nuFX.getDiskBuffer ());
+        fos.close ();
+        tmp.deleteOnExit ();
+        file = tmp;
+        suffix = "po";
+        compressed = true;
       }
       catch (IOException e)
       {
diff --git a/src/com/bytezone/diskbrowser/prodos/write/ProdosDisk.java b/src/com/bytezone/diskbrowser/prodos/write/ProdosDisk.java
index 2f1cc0e..a6a80b5 100644
--- a/src/com/bytezone/diskbrowser/prodos/write/ProdosDisk.java
+++ b/src/com/bytezone/diskbrowser/prodos/write/ProdosDisk.java
@@ -112,7 +112,7 @@ public class ProdosDisk
   }
 
   // ---------------------------------------------------------------------------------//
-  FileEntry addFile (String path, int type)
+  public FileEntry addFile (String path, int type, byte[] dataBuffer)
   // ---------------------------------------------------------------------------------//
   {
     String[] subdirectories;
@@ -160,6 +160,8 @@ public class ProdosDisk
       fileEntry.headerPointer = catalogBlockNo;
       fileEntry.fileType = 4;                   // text
 
+      fileEntry.writeFile (dataBuffer);
+
       fileEntry.write ();
       updateFileCount (fileEntry.headerPointer);
 
@@ -169,6 +171,16 @@ public class ProdosDisk
     return null;
   }
 
+  // ---------------------------------------------------------------------------------//
+  public void close ()
+  // ---------------------------------------------------------------------------------//
+  {
+    writeVolumeBitMap ();
+    volumeDirectoryHeader.write ();
+    for (SubdirectoryHeader subdirectoryHeader : subdirectoryHeaders.values ())
+      subdirectoryHeader.write ();
+  }
+
   // ---------------------------------------------------------------------------------//
   private FileEntry searchDirectory (int blockNo, String fileName)
   // ---------------------------------------------------------------------------------//
@@ -351,4 +363,11 @@ public class ProdosDisk
       }
     }
   }
+
+  // ---------------------------------------------------------------------------------//
+  public byte[] getBuffer ()
+  // ---------------------------------------------------------------------------------//
+  {
+    return buffer;
+  }
 }
diff --git a/src/com/bytezone/diskbrowser/utilities/NuFX.java b/src/com/bytezone/diskbrowser/utilities/NuFX.java
index cf8da92..488483c 100644
--- a/src/com/bytezone/diskbrowser/utilities/NuFX.java
+++ b/src/com/bytezone/diskbrowser/utilities/NuFX.java
@@ -7,6 +7,8 @@ import java.nio.file.Path;
 import java.util.ArrayList;
 import java.util.List;
 
+import com.bytezone.diskbrowser.prodos.write.ProdosDisk;
+
 // -----------------------------------------------------------------------------------//
 public class NuFX
 // -----------------------------------------------------------------------------------//
@@ -24,13 +26,7 @@ public class NuFX
   // ---------------------------------------------------------------------------------//
   {
     buffer = Files.readAllBytes (path);
-    readBuffer ();
-  }
 
-  // ---------------------------------------------------------------------------------//
-  private void readBuffer ()
-  // ---------------------------------------------------------------------------------//
-  {
     masterHeader = new MasterHeader (buffer);
 
     int dataPtr = 48;
@@ -86,7 +82,37 @@ public class NuFX
     }
     else if (totalFiles > 0)
     {
-      listFiles ();
+      //      listFiles ();
+      try
+      {
+        ProdosDisk disk = new ProdosDisk (1600, "DISKBROWSER");
+        int count = 0;
+        for (Record record : records)
+        {
+          if (record.hasFile ())
+          {
+            String fileName = record.getFileName ();
+            int fileSize = record.getFileSize ();
+            int fileType = record.getFileType ();
+            int eof = record.getUncompressedSize ();
+            byte[] buffer = record.getData ();
+            System.out.printf ("%3d %-35s %,7d  %d  %,7d  %d%n", ++count, fileName,
+                fileSize, fileType, eof, buffer.length);
+            if (fileType == 4 && count > 10 && count < 16)
+            {
+              disk.addFile (fileName, fileType, buffer);
+            }
+          }
+        }
+
+        disk.close ();
+
+        return disk.getBuffer ();
+      }
+      catch (IOException e)
+      {
+        e.printStackTrace ();
+      }
     }
 
     return null;
diff --git a/src/com/bytezone/diskbrowser/utilities/Record.java b/src/com/bytezone/diskbrowser/utilities/Record.java
index 7c5a825..1df3388 100644
--- a/src/com/bytezone/diskbrowser/utilities/Record.java
+++ b/src/com/bytezone/diskbrowser/utilities/Record.java
@@ -193,6 +193,16 @@ class Record
     return 0;
   }
 
+  // ---------------------------------------------------------------------------------//
+  byte[] getData ()
+  // ---------------------------------------------------------------------------------//
+  {
+    for (Thread thread : threads)
+      if (thread.hasFile ())
+        return thread.getData ();
+    return null;
+  }
+
   // ---------------------------------------------------------------------------------//
   @Override
   public String toString ()