Incorrect free space reported?

Discussion in 'MacBook Air' started by terraphantm, Aug 1, 2010.

  1. terraphantm macrumors 68040

    Joined:
    Jun 27, 2009
    Location:
    Pennsylvania
    #1
    It appears that either disk utility or finder are misreporting the free space available on my main partition. Finder indicates there's 33GB available and disk utility inidcates there's only 23GB available. Anyone know why there's a discrepancy? Which figure is the right one?

    Also I'm trying to resize the partition (to be smaller) but disk utility always errors out on my. I want to increase the size of my windows partition since i'm finding I need the space there more than I need it in OS X.
     
  2. lostless macrumors 6502

    Joined:
    Oct 22, 2005
    #2
    They are both right. The apple bootcamp utility shows disk sizes in base 2. The finder shows disk sizes in base 10. Windows shows disks in base 2. All hard drive manufactures sell by base 10. Disks/files look bigger in OSX vs. windows.
    The reason is base 2 counts 1024 kB = 1 MB 1024MB = 1GB 1024 GB = 1TB ect.
    Base 10 counts 1000KB = 1MB 1000MB = 1GB 1000GB = 1TB
     
  3. fluffyx macrumors 6502

    Joined:
    Oct 25, 2007
    #3
    You'll need to back up your data from both partitions, and completely erase the drive.

    When you're resizing partitions that don't have large amounts of free space, it's common to see an error message.

    Remember to leave at least 4 GB for your Mac OS X partition!
     

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