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Upgrading Mac mini

I have a late 2012 Mac mini and have Mojave installed on the original 500g drive. I installed a Samsung SSD and was able to clone the HD to the SSD - HFS. I want to upgrade the SSD system to APFS and install High Sierra. Haven’t been successful error says SSD isn’t APFS. I was under the impression that booting the SSD and upgrading to High Sierra would automatically convert the OS to APFS. How do I do install high Sierra on the SSD and make it the boot drive?

Mac mini, macOS 10.14

Posted on Jul 4, 2020 8:27 PM

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Posted on Jul 4, 2020 9:59 PM

You will need to start over using Disk Utility in Recovery Mode I order to Erase and Format the SSD to APFS.

see > How to erase a disk for Mac - Apple Support

Then you can Clone from the HDD or Reinstall macOS and Migrate from the HDD or your Time Machine backup.

How to reinstall macOS from macOS Recovery - Apple Support

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Top-ranking reply

Level 10

90,946 points

Jul 4, 2020 9:59 PM in response to Ww123ww

You will need to start over using Disk Utility in Recovery Mode I order to Erase and Format the SSD to APFS.

see > How to erase a disk for Mac - Apple Support

Then you can Clone from the HDD or Reinstall macOS and Migrate from the HDD or your Time Machine backup.

How to reinstall macOS from macOS Recovery - Apple Support

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Upgrading Mac mini

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