Boot Camp says I need 10GB of free space but I have 44GB

Discussion in 'Mac OS X Lion (10.7)' started by MythicFrost, Jan 22, 2012.

  1. MythicFrost macrumors 68040

    MythicFrost

    Joined:
    Mar 11, 2009
    Location:
    Australia
    #1
    Hi,

    I'm trying to make Boot Camp partition so I can install Windows. I've got a 64GB SSD with Lion 10.7.2 on it, and I've got 18GB used and 44.6GB free space available right now. I initially had 22GB free space available and have been clearing off as much as I can, however there's not really anything else I can remove now...

    What on earth is wrong with it?
     
  2. Xgm541 macrumors 6502a

    Joined:
    May 3, 2011
    #2
    Even though it says 10gb you need 20gb. You said you had 22 free so this is strange, but I've managed to make a windows partition with a 64gb MacBook air before.

    Edit : sorry just re read your post. Misunderstood it at first.
     
  3. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #3
    It's possible you don't have 10GB of contiguous space. If that's the case, you may need to defragment your drive.
     
  4. MythicFrost thread starter macrumors 68040

    MythicFrost

    Joined:
    Mar 11, 2009
    Location:
    Australia
    #4
    Mmm, I see. Well yeah I've got 44GB right now.
    Mmm, I don't really want to defrag my SSD. Any other way?
     
  5. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #5
    If that is the problem, I don't think you have an alternative.

    Boot Camp Partition Problem
     
  6. MythicFrost thread starter macrumors 68040

    MythicFrost

    Joined:
    Mar 11, 2009
    Location:
    Australia
    #6
    I see. Thanks.

    I've noticed a strange anomaly. Get Info on "Macintosh SSD" shows 44GB free space available whereas Activity Monitor and Disk Utility both show 22GB free and 40GB used...?
     
  7. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #7
    For space issues, there are a few things you can try:
    • Begin by restarting your computer as a first step. This sometimes resolves issues.
    • For Time Machine users on Lion, space may being consumed by Time Machine local snapshots, which can be disabled.
    • Search with Finder to see if the space is being consumed by a very large file or several large files. Adjust the 50GB in the illustration to whatever size you deem appropriate.
      [​IMG]
    • Use OmniDiskSweeper, JDisk Report or GrandPerspective to see how space is being used on your drive. Some of these apps may show more detail than others, so try several.
     
  8. MythicFrost thread starter macrumors 68040

    MythicFrost

    Joined:
    Mar 11, 2009
    Location:
    Australia
    #8
    I can't explain why it was showing different amounts of free space in Disk Utility vs Get Info on the drive, but turning off local snapshots fixed it. I saw my space in Activity Monitor gradually increase from 22GB to like 44GB or something. Thanks a lot for the help! I've got it working :)
     
  9. thundersteele macrumors 68030

    Joined:
    Oct 19, 2011
    Location:
    Switzerland
    #9
    You basically explained it. That's just how these local snapshots work.

    Note that "Get Info" reports "space available", while Disc Utility reports actual "free space." The space occupied by snapshots is not free, however it's considered available since OSX will remove the snapshots in case the space is needed, or after a week.
     
  10. MythicFrost thread starter macrumors 68040

    MythicFrost

    Joined:
    Mar 11, 2009
    Location:
    Australia
    #10
    Oh right, I see. Well thanks for that!
     

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