Question: Kernal Error on start up?
I have installed a new HD as mine appeared to have failed.
Installed OSX on an external drive by mistake And started up the Mac and it worked.
Formatted my new hard drive with Disk Utility and selected GUID etc Confirmed it was OK
Installed OSX onto HD in OS Recovery mode.
Now it wont restart in any mode and displays the “You need to restart“ Black Window whatever mode you use or attempt.
Even holding down Option and selecting the external drive wiht OSX results in the same error.
Cannot start. Any advice??
iMac, OS X Mountain Lion (10.8)