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Formatting a fusion drive to APFS before upgrading to Mojavi  


Michael Logue
New Member
Joined: 2 years ago
Posts: 2
January 26, 2019 5:49 EST PM  

It is clear that if you format you drive to APFS rather that convert a HFS+ drive to APFS you will have less problems in the long run.  My question is if you have a fusion drive and are upgrading from High Sierra to Mojavi, what are the steps you need to do this.  I have 2 superDuper! clones of my High Sierra startup drive.  Normally I would just boot from the clone and format the internal drive as an APFS volume.  But I it seems I cannot format a fusion drive as APFS from High Sierra!.  What is the simplest way to accomplish this task?  Let the discussion roll on.

Estimable Member
Joined: 2 years ago
Posts: 144
January 28, 2019 10:33 EST AM  

I guess you'd have to boot from one of your clones, run the Mojave installer from there, and launch Disk utility from there where you would have the option to format the local drive to APFS and install Mojave after. It's worth a try.