Disk space reported differently around OS X

Discussion in 'MacBook Air' started by jamrolu, Sep 7, 2014.

  1. jamrolu macrumors newbie

    jamrolu

    Joined:
    Oct 13, 2011
    Location:
    Manchester, England
    #1
    Hi everyone - I'm hoping someone can help me solve a mystery!

    I've got a 2012 MacBook Air with a 256GB SSD running OS X Mavericks 10.9.5.
    When I view info about the hard disk, it shows as having 93GB free - however, when I view System Information, it says 48GB free.

    45GB seems to have gone missing somewhere!

    I've attached a screenshot showing both numbers.

    I have done a repair permissions and repair disk using Disk Utility but no change.
    Any ideas?

    Thanks in advance!
    James
     

    Attached Files:

  2. triptolemus macrumors 6502

    triptolemus

    Joined:
    Apr 17, 2011
    #2
    Read this... I think it explains what you're seeing...

    http://www.cnet.com/news/options-for-checking-free-hard-drive-space-in-os-x/

     
  3. DeltaMac macrumors 604

    DeltaMac

    Joined:
    Jul 30, 2003
    Location:
    Delaware
    #3
    You will notice that the 45.4 GB is exactly what the "Backup" item shows.
    That's the on-disk backup from your Time Machine. That space should be recovered on the SSD, if you connect your external drive that you use for Time Machine backups. You'll need to allow time for the backup files to transfer.
     
  4. jamrolu thread starter macrumors newbie

    jamrolu

    Joined:
    Oct 13, 2011
    Location:
    Manchester, England
    #4
    Thanks for the link and info guys.

    I backup over WiFi to a Time Capsule, which is running regularly so I don't think there's a 'backlog' of backups waiting to go up… could it be a cache of changed files in case I want to roll back, without having to pull them down from the Time Capsule?

    Thanks
    James
     
  5. maflynn Moderator

    maflynn

    Staff Member

    Joined:
    May 3, 2009
    Location:
    Boston
    #5
    Its not a backlog, but time machine actually uses your internal drive for back ups.

    If you wish to stop that, then issue the following command in the terminal
    sudo tmutil disablelocal
     
  6. Rafaeldm macrumors newbie

    Joined:
    Feb 4, 2013
    #6
    well I believe I should leave my opinion on the matter, a few weeks ago I had like 120 gb allocated to the "other" section, what I did to clean that space was to repair the permissions and fix the ssd the disk utility, some errors were show, and then the "other" was like obliterated by 80%..

    hope that helps, sorry for the ****** english :)

    edit : well your problem has nothing to do with mine, that space is the time machine local backup, if you use an external time machine you can google how to disable the local time machine backup..
     
  7. jamrolu thread starter macrumors newbie

    jamrolu

    Joined:
    Oct 13, 2011
    Location:
    Manchester, England
    #7

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