Resolved different amounts of free space

Discussion in 'MacBook Pro' started by bdodds1985, Dec 20, 2011.

  1. bdodds1985, Dec 20, 2011
    Last edited: Jan 18, 2012

    bdodds1985 macrumors 6502a

    bdodds1985

    Joined:
    Jul 18, 2011
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    Tartarus
    #1
    Disk utility & System Information shows me that on my internal SSD I have 72.1 GB of free space. But under "Get Info" on the "Macintosh HD", and the icon on my desktop, shows me that I have 101.87 GB of free space. I know I dont have that much stuff on my internal. NO music, 2.5GB of photos and videos, a couple apps (the biggest one is VLC!), 4.55GB Total.

    I have my time machine backups going to an external when I want them to, and thats on a 1.5TB FW800 External with a partitioned 100GB specifically for backups.

    So why is disk utility saying I have used 48.37GB!?!?! Theres no way.

    I'm trying to figure this out before I install my 2nd SSD into the optical bay slot, which I will use it for music (60GB) and everything else I stated above. That way pretty much the only thing on the boot drive, is the OS.

    But somethings not right here... what can I do to get the correct amount of disk space and free up the extra unused GB's?
     
  2. simsaladimbamba

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    located
    #2
  3. heisenberg123 macrumors 603

    heisenberg123

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    #3
    are you on Lion? using Time Machine?

    time machine takes local snapshots
     
  4. bdodds1985, Dec 20, 2011
    Last edited: Dec 20, 2011

    bdodds1985 thread starter macrumors 6502a

    bdodds1985

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    #4
    I am on Lion, and as I stated Time machine is on my external when its plugged in, and even so I havent used 40GB of space! What I stated above is EVERYTHING I have on the drive as far as space that should be used, plus the OS. Soooo.... maybe 20-25GB. I only have 7GB of stuff on the drive. plus the 10 or so for Lion. I did have to use a thumb drive to install Lion even though the recovery is built into my MBP. I just couldnt download it via the internet, nor would I ever want to. So its possible that the recovery drive still uses some space but it STILL shouldnt be that much.

    EDIT: now all the sudden it changes and says I have 100GB of free space. Im so lost. I knew I shouldve taken a screen shot when it said that, but I didn't. I do have one now though in case it does it again.
     
  5. heisenberg123 macrumors 603

    heisenberg123

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    Oct 31, 2010
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    #5
    ya i dont know, I personally have about 20GB of "other" that i cant trace using any of the above methods, most people tell me dont worry its just system files, that might be your case too
     
  6. squeakr macrumors 68000

    squeakr

    Joined:
    Apr 22, 2010
    #6
    Are you sure that you have turned off local snapshots as the previous poster stated? If you don't turn them off through terminal commands then even though Time Machine is on your external, with Lion it will take local snapshots and depending on how many it has taken it could easily be the amount you are reporting?
     
  7. bdodds1985 thread starter macrumors 6502a

    bdodds1985

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    #7
    one more note, this is not the first time I've noticed this problem. and the first time I had time machine off. No need to constantly back up if nothing changes.
     
  8. squeakr macrumors 68000

    squeakr

    Joined:
    Apr 22, 2010
    #8
    Yes, but did you turn off the local snapshots. Even with Time Machine off, the snapshots will still remain on the system, they don't just disappear. The only time that they are removed is when the space is needed and then Time Machine deletes some snapshots to make space on an as needed basis (although I have read where people say that their snapshots disappeared when they sync'd with Time Machine but that is not how it is supposed to happen as per Apple). So once again, did you disable it within Terminal? We would like to help you but we need you to be able to answer questions to help with this process.

    Time Machine constantly backs up as something is always changing, new email, a background system setting, such as an update scan, etc. I have disabled my local snapshots through Terminal, as I just need an occasional back up to roll to if my smaller SSD drive dies (and most of my information is on the cloud or my server).
     
  9. bdodds1985 thread starter macrumors 6502a

    bdodds1985

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    #9
    Sorry squeakr, I do appreciate the help... trust me. As a novice user it why I'm here.

    I would LOVE to disable the snapshots but have no clue how. Can you show me? Can you show me, and if I do this does it have any effect on time machine when it does back up onto my external?
     
  10. thundersteele macrumors 68030

    Joined:
    Oct 19, 2011
    Location:
    Switzerland
    #10
    Time machine local snapshots is one possible explanation for this discrepancy:

    http://support.apple.com/kb/HT4878

    Note:
    About this Mac -> Storage tells you what is occupying your disk. On my MBP, it currently says 66.56 GB free out of 120.47 GB. If I look at the breakdown, "Backups" are 383.4 MB.
    Now, if I select my HD in Finder and click "Get Info", it says 66.95 GB free. It does not count the backups as used space, because, as explained in the link above, the local snapshots are freed up if the HD space is needed.

    What probably happened is that you moved a few large files through your SSD, and then deleted them. At some point I had more than 10 GB in backups. After a while (about a week), it was freed up again. It is not necessary to disable the local snapshots, but you can do it if they disturb you.
     
  11. Sonhascome macrumors 6502

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    Feb 18, 2010
    Location:
    Maryland
    #11
    I'd download daisy disk. Turn off timemachine and when you do it should delete all of the time machine backups that it has put on the computer, then you shouldn't have a discrepancy between the two anymore
     
  12. bdodds1985 thread starter macrumors 6502a

    bdodds1985

    Joined:
    Jul 18, 2011
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    #12
    now the problem im having is that it wants to back up my music or something? its telling me that i have almost 100GB to back up! thats the 70GB of music plus the other 25GB of everything else... i have my music on my optical bay ssd, and it doesnt need to be backed up. any way i can turn that off, or select just backing up whats on my original ssd to back up?
     

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