So: it is very important to always have a reasonable amount of free space on your Windows XP startup disk.
This link has been bookmarked by 11 people . It was first bookmarked on 03 Jun 2009, by Graham Perrin.
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04 Aug 13
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30 Nov 09
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In Windows XP and in Windows Server 2003, the defrag utility defrags the MFT
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A defrag operation on the MFT combines an MFT file into 1 and prevents it from being stored in multiple places that are not sequential on disk. In this class of operation, the MFT file is more sequential. However, it is exactly the size that the MFT file was before the defrag operation.
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An MFT can be too big if a volume used to have lots of files that were deleted. The files that were deleted cause internal holes in the MFT. These holes are significant regions that are unused by files. It is impossible to reclaim this space. This is at least true on a live NTFS volume
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As files are added to an NTFS volume, more entries are added to the MFT and so the MFT increases in size. When files are deleted from an NTFS volume, their MFT entries are marked as free and may be reused, but the MFT does not shrink. Thus, space used by these entries is not reclaimed from the disk
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Volumes with a small number of relatively large files exhaust the unreserved space first, while volumes with a large number of relatively small files exhaust the MFT zone space first
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If the unreserved space becomes full, space for user files and directories starts to be allocated from the MFT zone competing with the MFT for allocation. If the MFT zone becomes full, space for new MFT entries is allocated from the remainder of the disk, again competing with other files.
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29 Jul 09
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03 Jun 09
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utilities that defragment NTFS volumes cannot move MFT entries
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fragmentation of the MFT can impact performance
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NTFS reserves 12.5 percent of the volume for exclusive use of the MFT
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Add Sticky Noteunless the remainder of the volume is completely used up
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Disk Defragmenter displays "green"
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MFT, pagefile.sys
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"MFT Zone" or reserved space for "MFT Expansion"
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The defragmentation report
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not mention the MFT Zone
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Public Stiky Notes
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