I think I am just going to have to start from scratch... my OC 0.6.3 USB thumb drive will startup and let me see the install drive. if selected, it starts to load then just reboots after only a short try. If I select the macOS-data, it gives a security error and says it will not boot from that drive. If I start the recovery partition, I can get back to the re-install Big Sur utility which just takes me through installing again but never get past the 3rd reboot and just loops. My backup disk that was booting was a Clover installation of Catalina, and it just booted to a security slash/circle. IF I install from a USB thumb drive from scratch over the top of the original internal NVMe drive, will it keep the applications etc? Is there a from scratch Big Sur installation mini guide? If I mount the drive in an external case, my other hackintosh sees everything OK and will check the disks with no errors. Including mounting the EFI so I hate to wipe it at this point but don't see many options as my backups are dwindling.