Mountain lion on iMac compatible with retina Macbook pro?
My late 2012 13" Retina Macbook pro running Mountain lion 10.8.4 is suddenly paralysingly slow due to kernel_task hogging my CPU. I have not been able to find a definite solution to this problem yet, but I am guessing some software installed is causing the sudden meltdown.
I ran Apple Hardware test 3 times.. the first time it spotted an error "4SNS....ICOR..." but after cleaning out the vents on my mac, it hasn't shown up again.
Now I read online that a clean fresh install of Mountain Lion may solve the kernel_task problem... however my rMBP is so slow, that I cant even manage to open the app store on it.
So my questions are:
1) Is there any solution to fixing the kernel_task hyperactivity on the rMBP that I am not aware of? (Tried rebooting, resetting SMC, PRAM multiple times, repairing disk, repairing disk permissions -- all to no avail - the problem recurs after a short period of normalcy and then goes back to becoming unusable)
2) I have a 2011 iMac... Can i download mountain lion on it via the app store, make a bootable disk from it, and use it to perform a fresh reinstall of mountain lion on my 2013 rMBP? Can OSX downloaded on app store of iMac be used on a totally different device like rMBP? Should I be worried about device incompatibility, drivers going out of whack, etc? Or is the mountain lion installer a global software and can figure out the device make on its own and install itself correctly?
Thanks
Regards
Oogamous
1. That's a known problem in portable Macs. There's a fix but you have to follow the steps carefully > http://www.rdoxenham.com/?p=259 Make a backup of your files before doing this.
2. The 13-inch MacBook Pro with Retina display was launched with a special OS X version, but as the most recent OS X version is 10.8.4, you can download OS X Mountain Lion from the iMac and use it in the MacBook Pro without any problem. Just download OS X Mountain Lion in the iMac and use Lion Diskmaker to burn it to a USB drive or DVD > http://liondiskmaker.com
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