Mac mini downgrade to mountain lion

To reinstall macOS follow these steps:. How to Downgrade from macOS Restart your Mac, holding down the Command and R keys until you see the Apple logo. Click Continue.

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Choose the last backup before you upgraded to macOS High Sierra. Wait for your Mac to restart.

Navigate to the most recent backup and to the files and folders you want to restore and use Time Machine to retrieve them. If you used GetBackup Pro or another backup tool to backup your High Sierra disk, use its restore facility to retrieve files.

Manually copy any other files from cloud storage or an external disk. To get apps from Setapp, download the Setapp desktop app and sign into your account. Then install other apps from there. How to downgrade without a Time Machine backup If you have a bootable installer, say on a USB stick, of the version of macOS you want to revert to, you can use that to downgrade from High Sierra. To reinstall macOS follow these steps: Plug the new bootable installer into your Mac. Restart your Mac, holding the Alt key and, when you see the option, choose the bootable install disk.

Launch Disk Utility, click on the disk with High Sierra on it the disk, not just the volume and click the Erase tab. Click Erase. When the disk has been erased, restart by holding down Command-R and wait for the macOS Utilities window to appear. Follow the onscreen instructions and wait for your Mac to restart.

When it restarts, ignore the option to migrate data from a backup. Re-install the backup tool you used to backup your Mac before you upgraded to High Sierra and then use that to restore data from that backup.

These might also interest you: High Sierra Problems: Someone achivied downgrade with help of Apple Store , which is not an option for me. There is not apple store around and my day free support recently expired. If someone from Apple read this, please can you disclose this supersecret method? I guess it is an utility to flash older firmware. Mac mini, OS X Mavericks Posted on Mar 9, 3: Page content loaded.

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Mar 9, Revert to former OS from Mavericks. If you do revert, I'd use Setup Assistant to restore your data.

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This process takes a while, so do it when you won't need the computer for several hours, based on my experience. Mountain Lion.

Unfortunatelly my Mac Mini shipped with What I am asking for is how can firmware be converted to If your Mac mini was shipped with Mavericks it won't run any OS X inferior to the one that came preinstalled. Mar 10, Hello Alberto. I know that rule, but Mini is special in that it is Mini HW with just newer software.