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Originally posted by PhoenixOD
reply to post by XeroOne
Can you point me to an official article that backs up your claims.
The disk space allocation of an NTFS volume may appear to be misreported for any of the following reasons:
The NTFS volume's cluster size is too large for the average-sized files that are stored there.
File attributes or NTFS permissions prevent Windows Explorer or a Windows command prompt from displaying or accessing files or folders.
The folder path exceeds 255 characters.
Folders or files contain invalid or reserved file names.
NTFS metafiles (such as the Master File Table) have grown, and you cannot de-allocate them.
Files or folders contain alternate data streams.
NTFS corruption causes free space to be reported as in use.
Other NTFS features may cause file-allocation confusion.
Originally posted by PhoenixOD
reply to post by XeroOne
Well as a Microsoft Certified Professional and a Microsoft Certified Technology Specialist i ive read quite a few 'basic books on computing'. As everyone has said in this thread defragging just reorganizes you file system and does not give you back any free space.
But if you can find a Technet or MSDN article that says otherwise id be happy to read it.
Oh, look: [QUOTE]NTFS corruption causes free space to be reported as in use.[/QUOTE]
That was pretty much my point all along, but there's a good chance fragmentation's causing the problem.
In very rare circumstances, the NTFS Metafiles $MFT or $BITMAP may become corrupted and result in lost disk space.
You can identify and fix this issue by running the chkdsk /f command against the volume. Toward the end of chkdsk, you receive the following message if you must adjust the $BITMAP:
Correcting errors in the master file table's (MFT) BITMAP attribute. CHKDSK discovered free space marked as allocated in the volume bitmap. Windows has made corrections to the file system.