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Where can I find the files using up my external hard drive?

460 Views 16 Replies Latest reply: Dec 13, 2012 6:40 PM by knarfrh60 RSS
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knarfrh60 Calculating status...
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Dec 7, 2012 4:46 PM

I have a 1TB iMac and have two external hard drives attached to keep the computer free of hard drive use for two reasons: Disk 1-is a 250GB hard drive I have dedicated to perform Time Machine backups of my home folder. Disk 2-is a smaller 120GB hard drive I keep my compete iTunes library of music in case the computer has a malfunction, so all the work I've done putting the library together will be secure. Here's the thing...the iMac's hard drive is hardly used, just as I want containing about 150GB total.  Meanwhile, the Time Machine disk is nearly full with  225GB used, and just 25GB remainibg. The hard drive with the iTunes files looks pretty good too using about 70GB of it's 120GB.  I believe Time Machine is in no way, backups the iTunes library just the iMac.


How can I figure out where the additional space is getting used up on that disk?  I do have a couple of extra logins I use for alternate use such as a different iPhoto library I want kept seperate from mine, but I did not think the backup was saving those files as they are not even under the Time Machine setup.


Can anyone advise why the backup is larger than the use of the computer?  I knew when I dedicated a smaller hard drive to back up a larger one that it was possible the backup drive would get too full, but I can figure out what's happening. I've erased the Time Machine disk and allowed it do a completlely new backup and again, it's always sigificantly larger.



iMac, Mac OS X (10.7.3), iMac 21.5" Intel Core Duo 3.06 Ghz
  • BDAqua Level 10 Level 10 (114,670 points)

    Where do you see the 150 GB total for your internal drive?


    How much free space is on the HD, where has all the space gone?


    OmniDiskSweeper is likely the easiest/best, and is now free...



    And if needed, you can use Terminal to run it in admin mode to see files/folders your user can't see...


  • BDAqua Level 10 Level 10 (114,670 points)

    Hmmmm, Did you check the 250 when it was blank?


    Have you verified the drives in Disk Utility yet?

  • BDAqua Level 10 Level 10 (114,670 points)

    Well, we'll try to get to the bottom of it.


    Did that other question ever get resolved?

  • BDAqua Level 10 Level 10 (114,670 points)

    Something really messed up on the 250 GB drive, can you afford to erase it & do a one pass Zeroing?

  • BDAqua Level 10 Level 10 (114,670 points)

    I think I'd turn off TM, reboot, change the icons you want, then turn on TM again & see what is what.

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