Arch & UEFI [Was: Bug on missing staging modules rpm]

[Jason White]

Janina Sajka <janina at rednote.net> wrote:
> A couple specific questions below ...
> 
> Alonzo Cuellar writes:
> > ...
> > After that I just configure /boot/loader/entries/arch.conf
> > 
> > 
> > title   Arch Linux
> > linux   /vmlinuz-linux
> > initrd  /intel-ucode.img
> I didn't have this entry, but I do see the file in the directory. So, I
> added it as you have it. But, I'm curious. What does it do?

According to the bootctl manual page:
"A copy of systemd-boot will be stored as the EFI default/fallback loader at
/EFI/Boot/boot*.efi. A systemd-boot entry in the EFI boot variables is created
and added to the top of the boot order list."

I strongly suspect the configuration file, as above, then enables the boot
loader to find the kernel and the initrd. Thus the start-up order is:

EFI firmware -> boot loader -> kernel.

and the kernel is not booted directly by the EFI firmware in this
configuration, but by the *.efi boot loader executable specified in the EFI
boot variable.