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When I attempt to do sudo diskutil cs create I get the following response:

diskutil: did not recognize coreStorage verb "create"; type "diskutil coreStorage" for a list

It looks like there's no longer a create option available on Big Sur.

Usage:  diskutil [quiet] coreStorage|CS <verb> <options>
    where <verb> is as follows:

list            (Show status of CoreStorage volumes)
 info[rmation]   (Get CoreStorage information by UUID or disk)
 delete          (Delete a CoreStorage logical volume group)
 unlockVolume    (Attach/mount a locked CoreStorage logical volume)


diskutil coreStorage <verb> with no options will provide help on that verb
diskutil: did not recognize coreStorage verb "create"; type "diskutil coreStorage" for a list

Is there some other way that is the new intended path to creating a Fusion Drive?

Aaron Massey
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  • Try sudo diskutil apfs createContainer [-main] device [-secondary] [device]. The main will be considered to be faster than the secondary. Unlike sudo diskutil cs create lvgName devices ..., you do not provide a name. – David Anderson Oct 21 '21 at 14:33

1 Answers1

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From Mac Os Mojave the command to create/re-create a Fusion Drive is

diskutil resetFusion

It's explain here : https://support.apple.com/en-us/HT207584