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I am running 10.9.4 and have a 120 GB hard drive. Disk Inventory X shows only 51.9 GB of data, but About this Mac and Disk utility show less than 10 GB free space.

I tried these items:

  • Timemachine is off
  • sudo tmutil disablelocal
  • ran OmniDiskSweeper

Can you please help me understand the discrepancy in sizing?

Disk Inventory X

About this Mac...

Disk Utility

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    Which numbers are you comparing between the two screen shots? Which number are you looking for as being correct? – nohillside Aug 12 '14 at 10:54
  • @patrix IMHO he want compare the 51.9 used place from the 1st tool, (the funny colored thing) and the Belegt (Used): 111.51 from the Disk Utility. – jm666 Aug 12 '14 at 12:43
  • this is correct jm666. i have a 128GB SSD HDD and only 51.9 are shown. and i even run out of space and dont know how to handle the problem – foxxx Aug 12 '14 at 12:59
  • Could you check something please? Click the Apple menu in the top-left corner of the screen and choose "About this Mac...". Open the Storage tab and tell us how much it says is being used for "Backups". – Alistair McMillan Aug 12 '14 at 13:25
  • pix.defcon5.biz/files/15525656181204582729.png "sonstige" is in english "other"... – foxxx Aug 12 '14 at 13:45
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The biggest issue here is that you need to run your analysis tools as root. If you don't do this, you'll only see the files that your account has access to, and so you won't see everything that is taking up space.

I like GrandPerspective personally. If it's in your Applications folder, the command to run it as root looks like this:

sudo /Applications/GrandPerspective.app/Contents/MacOS/GrandPerspective
  • i just downloaded grandperspective and im trying this as admin – foxxx Aug 13 '14 at 13:00
  • You found the source of the discrepancy? – Alistair McMillan Aug 15 '14 at 18:17

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