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Compact sparse disk images via the command line
Authored by: batspray on Jun 13, '06 07:07:57AM


I was looking for this tip, but I'm not sure I could make it work.

I followed the procedure and used the command line as described, but my .sparseimage file has not shrinked a bit!! It is still 95 GB on disk. However, when I mount it, the Finder reports that the disk is 145 GB in size, with about 13 GB free. I suspect that the .sparseimage is in compressed format: I used Intego's PersonalBackup to create it, and I can't remember if I used the compress option (it may also be mandatory, I don't recall).

Does this mean that one can't compact a .sparseimage file when it is in compressed form? If so, is there an alternate way of reclaiming the free space. I could very well make use of these free 13 GB since I'm currently editing a three-tracks DV video, of 1hr15 each!! Without duplicating the 95 GB file, of course (since I don't have enough space to do so).

Thanks in advance,

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Compact sparse disk images via the command line
Authored by: JYF on Mar 16, '07 01:35:42PM
Try this command in Terminal :

hdiutil resize -sectors min /SomePathToYourImage/YourImage.sparseimage

It worked for me. Practice on a backup image though.

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