I upgraded to Mavericks my iMac early 2008. It took a while but went on with no problems. Then it asked to upgrade Pager, Numbers, Keynote, iMovie, iPhoto, iBooks and Aperture. I said yes to all, this also took a while and again no problems.
Then I tried to change some permissions on the hard disk and the computer froze.
When I rebooted I got this message
Unapproved Caller
Security Agent may only be invoked by Apple Software
and nothing worked, not even booting.
I did a Comand-R, repaired Disk Permissions and re-installed Mavericks.
Now Finder hags after a while, applications do not load.
What could have gone wrong? And, more importantly, how do I fix my iMac?
Thanks
Then I tried to change some permissions on the hard disk and the computer froze.
When I rebooted I got this message
Unapproved Caller
Security Agent may only be invoked by Apple Software
and nothing worked, not even booting.
I did a Comand-R, repaired Disk Permissions and re-installed Mavericks.
Now Finder hags after a while, applications do not load.
What could have gone wrong? And, more importantly, how do I fix my iMac?
Thanks