Shrink Volume on Vista

  themissingelf 17:04 12 Jan 2008

One of my hard disks contains Vista. It's a 250GB disk so I'd like to Shrink the volume to free up some space to make a Partition. However, when I use the shrink option, it says:

Total size before: 229334 MB
Size of available shrink: 78117 MB

I want to leave enough space for Vista (15GB I believe?), other programs, and any other OS updates etc.

I am surprised that I can only free up 78117 MB on a volume that is 77% free (176587 free MB's), however, I understand that this has something to do with unmovable files.

If I decide to shrink by the maximum allowable, will that mean that there remains 151271 MB for Vista or programs etc or will the unmovable files etc impose limitations on the available space?


  BurrWalnut 19:02 12 Jan 2008

The shrink partition utility can only decrease the partition size down to the first unmovable/locked system file.

To get round this, temporarily turn off System Restore, do the shrink and turn System Restore back on. Running a defrag may also move some of the ‘unmovable’ files.

Alternatively, you can shrink partitions by running the diskpart command from the Vista DVD, which avoids the occurrence of locked files.

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