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Question: Is OS X Mountain Lion Still Available

Hi Guys

I want to restore my Late 2012 Retina MacBook Pro back to OS X Mountain Lion though Internet Recovery. I was wondering if OS X Mountain Lion is still a supported version of OS X I could downgrade to.


MacBook Pro with Retina display, OS X El Capitan (10.11.1)

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That is correct. If you are using an SSD then you will need to use the same format used by an HDD to be compatible with Mountain Lion.

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Mar 10, 2018 10:53 AM in response to MacOS9 In response to MacOS9

This is supposed to do the trick:

Internet/Network Recovery of El Capitan or Later on a Clean Disk

  1. Restart the computer. Immediately after the chime hold down the (Command-Option-Shift-R) keys until a globe appears.
  2. The Utility Menu will appear in from 5-20 minutes. Be patient.
  3. Select Disk Utility and click on the Continue button.
  4. When Disk Utility loads select the drive (usually, the out-dented entry) from the side list.
  5. Click on the Erase tab in Disk Utility's main window. A panel will drop down.
  6. Set the partition scheme to GUID.
  7. Set the Format type to APFS (SSDs only) or Mac OS Extended (Journaled.)
  8. Click on the Apply button, then click on the Done button when it activates.
  9. Quit Disk Utility and return to the Utility Menu.
  10. Select Reinstall OS X and click on the Continue button.


1. To install the version of OS X that was currently installed use Command-Option-R.

2. To install the original factory version when the computer was new use Command-Option-Shift-R.

Mar 10, 2018 10:53 AM

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Question: Is OS X Mountain Lion Still Available