iMac wont restart following 10.8.4 update - HELP!!
I updated Mountain Lion to 10.8.4 (together with iTunes 11.0.4) on my 2011 iMac and all seemed to go without a problem. However, following the restart I'm getting the grey screen with the Apple logo and the spinning fan below it --- forever (i.e. 30 mins before I tried the below). It won't progress beyond that.
Have tried booting in safe mode, but the bar at the botto passes and the same grey screen as above apears -- and stays there, spinning fan and all.
Next, I tried recovery Mode and did a permission and a disk repair, both of which ran without any issues. However, upon restart, I'm back to square 1 with the grey screen and the spinning fan!
Help! What could be the problem and how can I get the boot process to complete? Has anybody else seen prolonged boot cycles (if so, how long?) and did the Mac then boot up? Happy to let it run for a while, but suspect something else is wrong...
Any and all help is appreciated!!
iMac, OS X Mountain Lion (10.8.3), x 2