ran combo update 10.8.5 process finished with a (install failed) after a reboot mac spec's was 10.8.5 all working but sound.
installed sound driver via MultiBeast 5.4.3 and after process finished with a (install failed) reboot and sound works just fine.
anyone else seeing install failed...
I've also had these problems and a new usb worked for me to get to the ML installer, but my problem is putting the ati6000controller.kext back, I'm using kextbeast and the kext file is on my desktop and I'm using multibeast to repair the permissions but its not working the kext file is greyed...
Going from Lion to Mountain Lion this seems to work but If I try to do a New install of Mountain Lion with unibeast I have problems replacing the Kext file. The Kext file is on my desktop with kextbeast and says install is a success but it will not work and the ATI6000Controller.kext file is...
Leo...you da man...Thank you for sharing this info. Im almost fully up and running on my second system but Im looking for a fix for my ATI HD3870 card.
I tried to inject ATI3800 Controler.kext and ATIRadionX3000.kext using kext beast but had no luck. Im still having to boot with no Graphics...
This is my setup but the mirroring option is not there
Model Name: iMac
Model Identifier: iMac12,2
Processor Name: Intel Core i7
Processor Speed: 3.49 GHz
Number of Processors: 1
Total Number of Cores: 4
L2 Cache (per Core): 256 KB
L3 Cache: 8 MB
Memory: 16 GB