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time machine is deleting all my old backups after moving to different iMac

396 Views 3 Replies Latest reply: Feb 11, 2013 1:25 AM by michaelw RSS
michaelw Level 1 Level 1 (110 points)
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Feb 6, 2013 3:50 AM

Hi - I had to move my data to a different machine and so I prepared a different iMac (early 2008). This is what I did:

  • I booted into Snow Leopard from my DVD
  • erased the HD
  • installed SL 10.6
  • booted into SL
  • ran software update to upgrade to 10.6.8 (to get the App Store)
  • installed Mountain Lion 10.8.2
  • used Migration Asistant to restore all my data, apps, and settings from my time machine backup


This all worked fine and at some point time machine asked me whether to inherit the time machine history. I confirmed this and all seemed fine until I noticed that time machine was backing for a long time and a lot of space was being freed on the time machine volume. I found that it was deleting all my old backups. Before I had data going back to 2010 but now I only have backups left from JAN 2012 onwards.


After some searching I found the excellent Pondini time machine site and performed the actions under B6 ("Reconecting" to your backups):


exxi:~ michael$ sudo tmutil inheritbackup /Volumes/tm2/Backups.backupdb/exxi 
exxi:~ michael$ sudo tmutil associatedisk -a / /Volumes/tm2/Backups.backupdb/exxi/2013-02-03-150320/exxi_hd 


I restarted the backup after applying the command above but it still is deleting old backups. I tried the same comand by associating it with an older backup but still it keeps deleting my backups.


What can I do to stop it from erasing all my backups?




OS X Mountain Lion (10.8.1)


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