Chosen Solution
I’m trying to split my Fusion Drive and I’ve tried the disk utility coreStorage logical volume groups list and the APFS list, neither find anything… see attached pictures. I do see disk1s2 over in Disk Utility… is that helpful to me??
I’ll be honest with you I haven’t played that much with Big Sur. And I don’t use Fusion Drives so my skills here are limited. Just working on the very small snippet of Disk Utility is all I have here to work with. Getting a full screen of each drive and its containers would have helped. Before you do anything make sure you have a current backup just in case! I do believe all you need to do is reformat the Apple SSD (cache drive) to break it. The Macintosh HD object within it is the Fusion Drive cache . Apple still has not documented Fusion Drives very well. Hoakley has done by far the best job of documenting things! Check out his web site The Eclectic Light Company Here’s the reference I’m using Big Sur boot volume layout.
