I'm trying to make my computer boot up on the arch grub where i have arch, win10 and ubuntu. Normally i just do the classic bcdedit command to make me boot on grub , but the arch grub efi is not on the default partition and I can't find how to specify the partition.
#[SOLVED] Make Arch grub the default windows bootmgr
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wise remnant
so your goal is that the system automatically boots to grub first?
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yup
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on many systems you can set a default boot order in uefi, have you tried that route
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usually it's easy because the grubx64.efi is on the leftmost partition, but with arch the efi partition is the 6th
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on many systems you can set a default boot order in uefi, have you tried that ro...
yup but rn i can't choose any because i kinda messed with windows bootmgr
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i can just choose a specific efi file to boot from but i have to manually search it
my bios lets me choose from "classic" boot manager but rn it can't find any so i choose a file manually
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your bios interface doesn't give you a list of bootable partitions it finds?
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your bios interface doesn't give you a list of bootable partitions it finds?
nope but that's not really the issue
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well typically I'd solve this with that, just select the desired partition as the default boot entry
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usually i do this command bcdedit /set {bootmgr} path \EFI\ubuntu\grubx64.efi for ubuntu so i tried to do it for arch by replacing 'ubuntu' by 'arch' but because it's not on the same partition it doesn't work
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bcdedit is a windows tool that I'm not familiar with
I'm assuming it's the windows equivalent of efibootmgr
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yup
because rn i have two grubs, ubuntu's one where i have ubuntu and windows and where i tried to add arch but i doesn't work, and arch's one where i have all three
so maybe if i fix ubuntu's grub to make arch works it will be better
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grub-install on an UEFI booted system with efibootmgr installed tries to automatically create a boot entry using efibootmgr
so if you did that, you should have that grub boot entry
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I'm talking about the entries on your uefi/bios interface
when your computer first boots, it loads that, which loads one of those bootloaders (such as grub)
if I understand correctly, the issue is that by default your uefi/bios selects the windows bootloader
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wise remnant
and you'd want to change it to select grub by default
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this is my boot manager
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okay that gave me more info
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and the windows boot manager is set to boot on grub
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because with my computer it was the easiest way to do so at the time
and it was a pretty normal way to do so
(for ubuntu)
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okay so you have an uefi boot entry called windows boot manager which boots what, arch's grub?
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ubuntu's
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and you want to change that to boot to arch's grub
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okay now I understand better
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this is ubuntu's grub
but the arch entry does not work
it juste black screen indefinitely
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ah
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and you want to change that to boot to arch's grub
or make arch entry on ubuntus grub works
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okay okay
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sorry if it was hard to understand
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I wasn't really familiar with this kind of a setup
but now I get it
I'd boot to ubuntu and try to reinstall ubuntu's grub
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i already tried it
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hmm
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i mount the arch partition, run os-prober and update grub config but still nothing
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it juste black screen indefinitely
it doesn't say anything?
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nope
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are you able to boot to arch directly somehow
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are you able to boot to arch directly somehow
yes, with arch grub
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so the issue is that the boot process stops with a black screen only on one of the grub installs
I don't exactly know where to go from there
maybe there's a config difference?
idk what else could be different with those
in grub you can press a button to show the grub config for that entry
I'd do that for both grubs on the arch entry
see if there's something different
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ubuntu grub's arch entry is missing the initramfs, I'm pretty sure that has to be explicitly defined
I'd also try with gfcxpayload=keep on
grub lets you manually edit it once there
but those aren't saved
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can i update the grub.conf file directly?
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first I'd try and see if it boots just with those changes
you can do them there and copy them from the arch grub's arch config
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can i update the grub.conf file directly?
that file is autogenerated by grub-mkconfig (ubuntu also has update-grub as a wrapper to that I think) and is not meant to be edited directly
the change would have to go elsewhere
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well now you know what the issue is but you have to make it persist
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but where should write the changes ? because i put them in grub.cfg
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yeah that's not a good idea since those will be gone the next time you regenerate grub.cfg on ubuntu
off the top of my head I'm not exactly sure what to do
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yeah but if i don't regenerate it it won't chagnge right?
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yeah but if i don't regenerate it it won't chagnge right?
I'm pretty sure it autogenerates on a hook when you run system updates
I'd check differences with the grub settings between the arch and ubuntu installs
grub.cfg isn't meant for holding persistent changes
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and not related to this but i can't remember in which file i should put my keyboard layout
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it's different based on what we're talking about
tty keyboard layout? xorg? wayland?
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thx