While I wait for the new hardware BIOS upgrade, I took the NVMe out of my gaming rig and installed a new blank one. Today I setup debian on it. Then I installed my workstation NVMe alongside it and also my 2 SATA 6TB HDs with btrfs so right now I have access to all my data again. But on a shit monitor (yes my gaming rig has a small monitor) and at a shit desk.
I decided to make this harder than it needs to be by building new instead of just booting my old workstation NVMe ... every 5-10 years I find it necessary to start over else you get buried in broken cruft and inexplicable behavior.