Is it safe to install MacOS High Sierra on iMac with Fusion Drives now?

[Bart Kela]

I wish I could go back to the last OS...there is nothing good about High Sierra......

I downgraded a 4-year old MacBook Air from 10.13 High Sierra to 10.12 Sierra this past weekend.

I just downloaded the Sierra installer from the Mac App Store, created a bootable USB flash drive, booted from that, wiped out the Air's SSD, then installed Sierra. Very simple, no fuss whatsoever.

Nothing prevents you from installing an older version of macOS/OS X that your computer is qualified to run.

 

[GuilleA]

So, still no APFS support for SSDs in RAID. APFS is the only reason I'd update to HS on my Mini, so I'll stick with Sierra for now. I can't see any other good reason to install it. I have it on my MacBook and quite frankly I don't see any need to update.

 

[dazzer21-2]

I just downloaded the Sierra installer from the Mac App Store, created a bootable USB flash drive, booted from that, wiped out the Air's SSD, then installed Sierra. Very simple, no fuss whatsoever.

That's sarcasm, right? That's a stack of time and effort I really don't want to get bogged down in. I'll stick to Sierra, I think.