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cannot install mountain lion on harddrive

2177 Views 4 Replies Latest reply: Jul 30, 2012 10:41 AM by HELLLOOOOO RSS
Negativ2 Level 1 Level 1 (0 points)
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Jul 26, 2012 4:42 PM

I have a 2010 imac and it says i can't install mountain lion on my harddrive.  how can i formate my drive to boot up with mountain lion.  I have a backup on a external harddrive.  It used to say that it was becuase for some reason i had time machine bootable files but i think i fix that but not for sure

iMac, Mac OS X (10.7.2)

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