11 Replies Latest reply: Feb 26, 2015 2:07 PM by Geeeooorge
bberrelez Level 1 Level 1 (0 points)

I am attempting to reinstall Mountain Lion. My MacBook Pro would not bootup last night, I received a grey screen and then it would just shutdown.


1. I tried removing the battery and keeping it plugged in, and the machine did the same thing.

2. I am unable to boot in Safe Mode (Holding left Shift key)

3. I tried resetting PRAM, still receive the same issue


I am able to access OS X Utilites Command+R and also boot up to the recovery partition by hold the Option/Alt key.


Unfortunately, none of these utilities are able to do anything. It cannot repair the disk (Keep in mind, I have no DVD to use). When repairing the disk I was instructed to reformat and reinstall the OS. That is fine, I have everything back up on a separate drive. 


However, when attempting to reinstall the OS X (From either partition) I receive the following message.


"An error occurred while preparing the installation. Try running this application again."


Any ideas what could cause this? Is there another way to restore/reinstall my OS?



MacBook Pro (17-inch Late 2008), OS X Mountain Lion (10.8)