Booting CCC Copy from second HDD

[TheLexus]

Hi guys,

i have problem booting from my CCC Backup HDD. It seems to be related to the fact that my Primary HDD is attached to the system, here is the story:

I had a problem updating to Catalina latest Update and screwed up my primary installation. Clover even does not showed it anymore, but i was able to boot my backup in this case without any problems. Now i reinstalled catalina to the primary drive and it works perfectly. But i cant boot my backup anymore (the backup disk was disconnected during installation, it isnt modified in any way since it was working).

Verbose boot shows only "Boot task failed: mount-phase-1". Primary boots perfectly with the same clover installation. If i sum up everything the only conclusion can be that macos dont want to start from the secondary drive as long as the primary drive contains a working installation... but because its an nvme i cant just plug the connector out... i have to disassemble the whole thing

Do you have any suggestions to solve this problem?

Thanx and Bye!
TL

 

[TheLexus]

I found how that the backup is booting if i add nvme=-1 to the boot arguments. So the conslusion seems to be correct, macos dont love the active first harddrive...

is there any way to change the order of drives using clover?