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musicbiz9 Author

Level 1

9 points

Catalina, APFS and Disk Utility

Hey all.

I have a string of issues that I'm trying to move through to get Catalina operating. It won't install because the SSD in my mac mini is formatted as Mac OS Extended (Journaled). I have read a bunch of forums so know that I need to reboot in recovery mode, unmount the drive and then select "Convert to APFS". Unfortunately, when I reboot in recovery mode, I seem to get an old Mountain Lion version of Disk Utility which means that option is not there. It's there when go to Disk Utility when normally logged in (I'm running Mojave), but greyed out. I know this is going to be something stupid like I'm holding down the wrong keys when rebooting or something..... But 4 hours in I'm giving up and asking :)

Mac mini, macOS 10.14

Posted on Dec 14, 2019 12:48 AM

Top-ranking reply

Barney-15E

Level 10

117,220 points

Posted on Dec 14, 2019 8:40 AM

Try booting into Internet Recovery using Cmd-Opt-R.

Booting into regular recovery is still booting from the drive that needs to be converted. I don't think it can convert the drive while booted into a portion of it.

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Catalina, APFS and Disk Utility

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