I have two drives, sda and sdb.
I boot into the first drive sda, via its EFI partition sda1, and its Ubuntu installation on sda2 and sda3. But this drive has developed bad sectors, I don't know if anything has been corrupted besides the bad sectors marked by smartmontools.
So I want to build a fresh setup on sdb which has no dependency at all on the failing drive sda.
I presume that means I need to install a separate and independent EFI on sdb, yes? I am not sure how to control which drives the motherboard's UEFI software sees, as opposed to what grub sees.
