Do you _really_ need to swap the current disk? If not: put a new disk into new hardware and you only have to copy data over. Ideally NVME or something fast. You may find some use for the old NUC: the only reason I say this particularly is because you installed with BIOS boot and changing that may be as much trouble as a new install. mythtv - debian-multimedia - yours to sort out, I think, but again, you may find it easier to have a spare machine that (sort of) works while you debug the new NUC Hope this helps - with every good wish, as ever, Andy Cater
Andy,My question is about compatibility of running debian bullseye on latest hardware. When I tried 10th gen core-i3 with buster, xorg did not work as it needed Linux 5.xx over the default 4.x on buster (at that time). I want to know if such a thing exists with 12th gen CPU.
Another question is with legacy boot. I did think about swapping disk out. Suppose I fresh install UEFI bullseye, can I simply add a new partition and copy over old install and update-grub from fresh install to add the old system to menu? Will it boot old copy as is or do I have to convert that in to full UEFI meaning change grub_pc to grub_efi in the old install?
I could start with copy of old system with new/fresh UEFI install as that will pick up the old system, if such a cross combo will work.
Regards Ramesh