thanks for the throwback, I remember having to hand patch the bios on my x79 system to use a gpu with 12GB vram. Fun times. My motherboard also mysteriously stopped working shortly after…

I patched my old Haswell system to add an NVMe DXE so I could boot from a modern SSD. I currently have a Lets Note laptop that definitely has UEFI, but pretty much pretends to be BIOS - apparently it's possible to modify to expose UEFI features but I have yet to try...