Arch & UEFI [Was: Bug on missing staging modules rpm]
jason at jasonjgw.net
Wed Jul 20 18:09:50 EDT 2016
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
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