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Will upgrading to Mountain Lion from Lion make my Lion Time Machine Backups unusable?

363 Views 9 Replies Latest reply: Nov 19, 2012 12:24 PM by mende1 RSS
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Nov 19, 2012 11:30 AM

I had a situation where when I upraded to Lion from Snow Leopard, my Time Machine Backups became unusable. It says that the Backups were not compatible and it was really frustrating because I had to delete my backups from Snow Leopard and re-backup from my Mac with the newly installed Lion.


Will this happen if I upgrade to Mountain Lion from Lion? Has anyone had trouble from this upgrade to Mountain Lion. Has your Time Machine backups been working fine with the new operating system?



MacBook Pro 13" (Mid-2010 Edition), Mac OS X (10.6.6)


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