I may have misunderstood but Big Sur requires APFS formatted storage to run an OS from. Carbon Copy Cloner isn’t able to copy the OS volume so wouldn’t have been saved from the Mac Pro. Sam is correct in that you would need to reinstall Big Sur via Internet Recovery and then you could either recover your user spaces/data using CCC or better but slower using the Migration Assistant. You can download Big Sur from the App Store and install it on an external device which you can boot from. And then CCC can be used to backup data only. It will not backup any changes to the OS and Bombich has a blog post explaining all this quite clearly. The external drive is bootable - I know as I’ve done it on my M1 Mac mini (and that has additional complications at present that it is only bootable from a drive connected to a Thunderbolt port.). I posted a Tidbits article about the needs to rethink backup strategy to the group recently because of all the changes.
-- Tony Crooks [email protected] +44 7428 706227 -- You received this message because you are subscribed to the Google Groups "Sussex Mac User Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/smug/CAHkKbUAVicyZ1sJ1YcwtXjQp2S9DhuzC3x9TdWsk4gZ2NTTQgA%40mail.gmail.com.
