2 Replies Latest reply: Feb 23, 2013 7:52 PM by dannyw49
dannyw49 Level 1 (0 points)

Used Migration Assistant to get files, pics, etc back to my Mac after all on hard drive wiped clean by GeniusBar.  Problem: Time Machine will not back-up due to lack of space.  Backup.backupdb is the main cause of lack of space.  It is as if TM was trying to back up itself by duplication.

Mac OS X
  • steve626 Level 4 (1,485 points)

    There is a solution to this (described in http://pondini.org/TM/B6.html ) but I believe it only works under 10.7 or later operating systems and you are using 10.6.


    Basically, it sounds like when you restored all your files from your backup to the newly formatted hard drive, Time Machine sees all those files as NEW or CHANGED because they are on a newly formatted hard drive and hence they all look different to Time Machine, even though their contents have not actually changed. So it wants to back them all up to the backup drive (again) and the only way to do this would require it to delete existing backups on that backup drive, including the  most recent one, which Time Machine won't do. Hence it reports that there isn't enough room.


    I suggest you purchase a new backup drive and start using that from now on with the newly formatted internal drive for backups. Alternatively, you can erase the external backup drive and tell Time Machine to start using it for backups, but I'm not comfortable with that because erasing your only backup seems unwise to me.


    A new 2 TB external drive from Western Digital can be obtained for less than $100.

  • dannyw49 Level 1 (0 points)

    Thank you.  I had suspected that was the problem.  Your options were along my line of thinking.  Looks like a new hard drive will be my answer.