4 Replies Latest reply: Jul 30, 2012 10:41 AM by HELLLOOOOO
Negativ2 Level 1 (0 points)

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)