Time Machine Driving Me NUTS!

Discussion in 'macOS' started by Fazzl, Dec 31, 2009.

  1. Fazzl macrumors 6502a


    Aug 13, 2007
    So when I try to use time machine i keep getting this error and i have no idea what to do...any suggestions?

    It doesn't prompt for me to delete an old back up

  2. maflynn Moderator


    Staff Member

    May 3, 2009
    How large is the destination drive? Perhaps its physically to big. TM should prompt you to delete Time Machine backups (though it never does for me), it will not prompt you to delete other files that you may have placed on the same drive.
  3. mysterytramp macrumors 65816


    Jul 17, 2008
    How long have you been using TM? Could you have added a huge file recently? A movie or podcast from iTunes? You might just have to delete the file or exclude from backup.

  4. gnasher729 macrumors P6


    Nov 25, 2005
    Time Machine will _never_ delete the last backup (because that would put you at risk if something goes wrong during the next backup), so you need space for the complete last backup, plus changes that you made. Apparently you made an awful lot of changes - 328 GB worth.

    To fix this without buying a new hard drive: Go into Time Machine preferences, pick folders with a total size of 250 GB and exclude them from the backup. Preferably pick folders with few very large files. Do a backup. Then add these folders back in again bit by bit, doing a backup each time.
  5. cjmillsnun macrumors 68020

    Aug 28, 2009
    I can see your problem straightaway.

    You have a backup that takes over 3/5 of your backup hard drive.

    Ideally your backup media should be at least double the size of the drive you are backing up.

    With a 500GB Hard disk in your MBP you need a backup drive of at least 1TB

    BTW a great tip for reducing backup sizes is to exclude Parallels/VMWare drives, as a small change to these = big change to your TM backup.
  6. jaw04005 macrumors 601


    Aug 19, 2003
    This can also happen when a Time Machine volume or backup gets corrupted because of failed/attempted backups. I used to have this problem a lot with Time Capsule.

    At that point, Time Machine tries to rebuild the initial backup again and if there’s not enough space to hold two full backups (the original corrupted one and the new one) it gives you this error.

    The only way to recover from it is do what others have suggested and get your backup down to the available space or just wipe the Time Machine drive and start over.

    If you need to recover files from the corrupted volume/backup that no longer reside on your current hard drive, you may have to do it manually through the Finder if Time Machine can’t mount the old backup.

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