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I came across this today :

enter image description here

At first I was like : "Caching bastard." but no... The finder is right and the diskutil is wrong... Why ?

Thomas Ayoub
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  • Can you check whether http://apple.stackexchange.com/questions/70983/large-difference-in-reported-free-disk-space or http://apple.stackexchange.com/questions/47647/how-to-fix-disk-utility-about-this-mac-and-finder-that-disagree-on-hard-drive solve your problem? – nohillside Nov 13 '14 at 10:47

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The reason is probably that you have local snapshots of time machine backups (http://support.apple.com/en-us/ht4878). The difference is that the Finder calculates the free space you can use (the backups would be deleted if necessary). They are stored at /.MobileBackups (at least that's what it has been in Mavericks iirc) if you want to have a look and verify how much space it is consuming.

Other possible causes:

  • some people claim that if you have disk encryption enabled those values may differ
  • maybe Disk Utility was opened before you removed some files and didn't refresh?
Marek Bettman
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