Thanks for the explanation, I should say this is significant : MFT increased from 2 to 1700 fragments according to Defraggler, Contig counts $Mft and $Mft::Bitmap as different files.
Microsoft Windows [Version 6.1.7600]
Copyright © 2009 Microsoft Corporation. All rights reserved.
T:\Win\Contig>Contig
Contig v1.6 - Makes files contiguous
Copyright © 1998-2010 Mark Russinovich
Sysinternals - www.sysinternals.com
Contig is a utility that defragments a specified file or files.
Use it to optimize execution of your frequently used files.
Usage:
Contig [-a] [-s] [-q] [-v] [existing file]
or Contig [-f] [-q] [-v] [drive:]
or Contig [-v] -n [new file] [new file length]
-a: Analyze fragmentation
-f: Analyze free space fragmentation
-q: Quiet mode
-s: Recurse subdirectories
-v: Verbose
Contig can also analyze and defragment the following NTFS metadata files:
$Mft
$LogFile
$Volume
$AttrDef
$Bitmap
$Boot
$BadClus
$Secure
$UpCase
$Extend
T:\Win\Contig>Contig -v V:\$Mft
Contig v1.6 - Makes files contiguous
Copyright © 1998-2010 Mark Russinovich
Sysinternals - www.sysinternals.com
------------------------
Processing V:\$Mft:
Scanning file...
V:\$Mft is already in 1 fragment.
------------------------
Processing V:\$Mft::$BITMAP:
Scanning file...
V:\$Mft::$BITMAP is already in 1 fragment.
------------------------
Summary:
Number of files processed : 2
Number of files defragmented: 0
All files were either already defragmented or unable to be defragmented.
// Run Defraggler Defrag on V:
T:\Win\Contig>Contig -v V:\$Mft
Contig v1.6 - Makes files contiguous
Copyright © 1998-2010 Mark Russinovich
Sysinternals - www.sysinternals.com
------------------------
Processing V:\$Mft:
Scanning file...
Scanning disk...
File is 45679 physical clusters in length.
File is in 1699 fragments.
Moving 45679 clusters at file offset cluster 4 to disk cluster 13894015
File size: 187105280 bytes
Fragments before: 1699
Fragments after : 1
------------------------
Processing V:\$Mft::$BITMAP:
Scanning file...
V:\$Mft::$BITMAP is already in 1 fragment.
------------------------
Summary:
Number of files processed : 2
Number of files defragmented: 1
Average fragmentation before: 850 frags/file
Average fragmentation after : 1 frags/file
T:\Win\Contig>
Debug log attached : Defraggler64.exe.2_2_2532011-02-17_12-07.txt