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)
What is the actual error message? For now see:
OS X- Cannot install on a volume used by Time Machine for backups
OS X Lion- Installer reports "This disk cannot be used to start up your computer"
It says OS X cannot be installed on "untitled"
this is shown when i try to run the installer for mountain lion
What is the disk "untitled?" Are you sure you've chosen your startup volume, "Macintosh HD," usually? Click on the Show Other Disks link under the disk icon, "untitled."
I have the same problem ... I chose Macintosh HD and it says, "This disk cannot be used to start up your computer." I have a Windows 7 bootcamp too .. My computer is MacBook Pro mid 2011 Snow leopard ... Please help me too
cannot install mountain lion on harddrive
