Re: booting by UEFI?

[Max Nikulin]

On 29/12/2024 23:26, Eben King wrote:
I swear I ran a program that showed me EFI boot vars (if they exist) and
it showed nothing.

efibootmgr -v

however you need to boot in UEFI mode at first, e.g. using a live media. 
Alternatively if firmware boot menu allows to pick an .efi file then you 
may create EFI system partition, install grub-efi-amd64-signed and 
shim-signed, switch to UEFI boot and select shimx64.efi from EFI/debian.