I just updated my 2009 iMac from 10.10 to 10.10.1 and it wouldn't boot properly now.
I get the Apple logo and a progress bar but the boot process stopped afterwards leaving me with a white screen and my cursor.
The same update on on a newer iMac went without problems.
Have anyone out there experienced the same problem?
iMac (27-inch Mid 2010), OS X Yosemite (10.10), 10.10.1
