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Why would upgrading from Lion to Mountain Lion more than double the size of my Time Machine backup?

105 Views 4 Replies Latest reply: Dec 22, 2012 8:35 AM by VikingOSX RSS
Mark Knoll1 Calculating status...
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Dec 22, 2012 5:54 AM

I have a 500GB Time Capsule that has 248 GB used. After upgrading from Lion to Mountain Lion, Time Machine reported that there was no longer enough room on the TC to complete the backup. Surely the new system files aren't taking up over 200GB? Does it somehow want to copy all of my user files again, even though the vast majority of those haven't changed since the previous backup?


I'd like not to have to upgrade to a larger TC just because of a system upgrade.


Thanks in advance.

OS X Mountain Lion (10.8.2)


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