Downgrading from Big Sur to Catalina

Started 3 months ago | Discussions thread
JPAlbert Senior Member • Posts: 1,099
Re: Stuck With Big Sur

light wrote:
"I'm confused. . . Aren't Fusion drives exempt from APFS formatting? (Your syntax isn't helping. . . )"

I don't own a fusion drive.
But... obviously APFS DOES work on them now, because how else could such Macs run the newer OS's -- Catalina, Big Sur -- that REQUIRE APFS ?

There's no option (I know of) by which to install either of these OS's onto a drive that is HFS+.

I believe Mojave was the last version of the Mac OS that can be run on a drive formatted for HFS+ (I've done it).

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