![]() ![]() Since you have stated you have correctly created the USB Mountain Lion installer, I will not post how to do so. You should choose "Mac OS Extended (Journaled)" as the format. After booting from the Mountain Lion installer, you will need to open the Disk Utility and erase the entire internal drive. My 2011 iMac will boot without any issues.Ĭatalina uses APFS which will not be recognized by Mountain Lion. OS X 10.8.4 and I can not boot from any OS X 10.8.5 installer created using instructions given in this answer. However, shows the earliest OS X that can installed on my iMac (21.5-inch, Late 2013) is Therefore, you should be able to install Mountain Lion on your Mac. You can also download Mac OS X Mountain Lion 10.8.A quick check at shows the earliest OS X that can be installed on a 2012 MacBook Pro model is between OS X 10.7 3 and OS X 10.8.2 inclusively. It is a complete offline setup of Mac OS X Lion 10.7.5 with the direct download link. System Requirements for Mac OS X Lion 10.7.5Ĭlick on the button given below to download Mac OS X Lion 10.7.5 DMG free. Technical Details for Mac OS X Lion 10.7.5 Resolves a video issue with some VGA projectors.Improved Wi-Fi reliability for the iMac.Enables users to automatically logging into a NIS account.Multiple versions of documents saved automatically.Easier to use and more powerful in term of progress and security. ![]()
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