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Level 1

1 points

This disk cannot be used to startup your computer?!?

Hello,

I just purchaed Mountaion Lion, but I can't install it. The installer keeps saying "This disk cannot be used to startup your computer" even though I am using that disk right now 😕. I read on other sites about the same issue when installing 10.7 Lion, and how it may help to make the partition smaller, however I seem to have no recovery drive, Command+R at startup does nothing and when holding Option I just see Macintosh HD. I checked to see if my MacBook is supported and it is. Can somone please help me, I'm stuck!

MacBook (13-inch Late 2009), Mac OS X (10.7.4), Xcode 4.2

Posted on Jul 25, 2012 12:44 PM

18 replies

Aug 24, 2012 10:03 AM in response to dereism

I dont entirely understand you. I have the same problem, but does clean install solve the problem? If yes, I will do it. If not, then I will postpone it until hopefully someone finds another solution.

Please tell me if clean install solved your problem...

dpb1

Level 1

8 points

Aug 27, 2012 8:57 AM in response to HELLLOOOOO

Hi -- I don't know. I didn't do a clean install.

Oopra

Level 1

0 points

Jun 29, 2013 3:54 AM in response to Blakeasd

I had a similar situation.Creating a new partition solved the problem. More explanation here: http://oopra.wordpress.com/2013/06/23/upgrade-to-mountain-lion-10-8-4-from-snow- leopard-10-6-8/

This disk cannot be used to startup your computer?!?