Hey,
On 28-12-2020 12:12, Peter K Haokip wrote:
thanks for the reply,
I am able to change the boot order from the BIOS menu. It works
A-okay from there, I am trying to accomplish that with efibootmgr.
If you're unlucky, maybe the motherboard firmware prevents you from
doing that. You could fall back to adding chain-load entries for grub in
that case, to have grub start the next bootloader.
could you cite any link where I could read about it in details ? where
the bootx64.efi file will be stored if I install it in NOT IN PORTABLE
mode(?)? cuz that would help me know whether the grub is installed in
portable or none portable mode.
You can add boot entries for any EFI executable on the EFI system
partition, regardless of the name. These boot entries are stored on
non-volatile storage on the motherboard. Normally, grub-install takes
care of this, and the binary is installed as `efi/grub/grub.efi`. All
you need to do is not pass `--removable` to grub-install.
You would install a bootloader as `efi/boot/bootx64.efi` only if you
want to create a bootable USB stick, or if your motherboards UEFI
implementation is so broken that that's the only thing that works.
Also, would be nice if you could provide any source where I can read
about how I make my motherboard detect regular boot entries (instead
of the /Efi/boot/bootx64.efi)
You can find everything in the specifications if you dig deep enough:
https://uefi.org/specifications
See in particular section 3.5.1.1 on "Removable Media Boot Behavior" of
the "UEFI Specification Version 2.8":
https://uefi.org/sites/default/files/resources/UEFI%20Spec%202.8B%20May%202020.pdf
Regards,
-- Maarten
thanks,
On Mon, 28 Dec 2020, 15:45 Maarten de Vries, <maarten@xxxxxxxxx
<mailto:maarten@xxxxxxxxx>> wrote:
On 28-12-2020 10:42, Peter K Haokip via arch-general wrote:
> I read an forum entry from nearly 6 years ago about am
efibootmgr bug that
> Doesn't let you change the boot order on a multi OS system if
you have arch
> linux as the default OS. Had some users report this as well in
other
> forums.
> Now i am facing the that problem in my system with arch ubuntu
and windows.
>
> when i change the boot order , it shows the change 'temporarily'
but when i
> restart it boots the default (Arch linux Grub ) and the change
disappears.
>
> I faced this issue last month and gave up on it since I couldn't
find any
> detailed resource on this on the net.
> This list may be my last hope.
>
> If anybody could give some direction , would be much appreciated.
>
> regards,
> khaithang39
Hey,
It could be a motherboard problem. Sadly I've seen more motherboards
with weird bugs in their UEFI implementation than without. You
could try
to change the boot order through the motherboard firmware interface
(often called "the BIOS" even if that isn't technically correct
anymore)
and see if that helps.
Another thing that may have happened is that you installed grub as
portable bootloader. It will be called `efi/boot/bootx64.efi` on
the EFI
system partition if that happened. A bootloader under that name is
auto-detected by the motherboard, even if you didn't add a boot entry
for it manually. Perhaps your motherboard always favors such
bootloaders
over the normal boot entries.
If this is the case, you could install grub as non-portable
bootloader
by not passing `--removable` to `grub-install`, and then delete
`efi/boot/bootx64.efi`. Alternatively, you might also be able to
configure your motherboard to prefer regular boot entries before
running
`bootx64.efi` from that partition.
I hope this helps,
-- Maarten
