So I purchased Mountain Lion on my iMac last year, but I since sold it for a 13" rMBP with Mountain Lion preinstalled of course.
I'd like to create a bootable install disk on my external drive, but I read that the installer file I have from last year will not boot up a newer rMBP.
So, I figured I could just redownload ML from the App Store, but when I try to do so I get a message saying "We could not complete your purchase. OS X Mountain Lion is not compatible with this computer."
I also read the only way to get the dmg installer file now is to execute some weird trick in ML Recovery Mode, but there has to be an easier way
I'd like to create a bootable install disk on my external drive, but I read that the installer file I have from last year will not boot up a newer rMBP.
So, I figured I could just redownload ML from the App Store, but when I try to do so I get a message saying "We could not complete your purchase. OS X Mountain Lion is not compatible with this computer."
I also read the only way to get the dmg installer file now is to execute some weird trick in ML Recovery Mode, but there has to be an easier way