[SOLVED] Is there a better way to get Grub to boot by label?

ThePacman · 2013-11-15 19:53:53

I'm creating a live USB, and it would be *extremely* useful to have Grub pass the kernel "root=LABEL=<whatever>" (right now I'm using UUID, but I'd like to switch over to label.)

I know that I can just modify /boot/grub/grub.cfg directly, but this is not supposed to be done - is there any way I can change something in /etc/default/grub or /etc/grub.d/?

[SOLVED]

Last edited by ThePacman (2013-11-16 17:58:10)

teateawhy · 2013-11-15 20:14:50

Read this:
https://wiki.archlinux.org/index.php/GR … _arguments
Then mark as solved.

ThePacman · 2013-11-15 23:42:55

Aha, thanks.
(I'd been poking around at https://wiki.archlinux.org/index.php/GRUB#Using_labels and forgot to check the rest of the page..)

ThePacman · 2013-11-15 23:51:26

Hold on, it seems that GRUB_CMDLINE_LINUX just gets appended, leaving my kernel getting passed two root= arguments, one with UUID and the other with label.

I've tried GRUB_CMDLINE_LINUX and GRUB_CMDLINE_LINUX_DEFAULT, but neither seems to behave correctly.

(I did remember to run grub-mkconfig -o /boot/grub/grub.cfg after each change.)

WonderWoofy · 2013-11-15 23:54:11

I don't think those instructions are telling you to change things in /etc/default/grub, but rather to actually change the generated entries in /boot/grub/grub.cfg.

ThePacman · 2013-11-16 02:08:41

WonderWoofy wrote:

I don't think those instructions are telling you to change things in /etc/default/grub, but rather to actually change the generated entries in /boot/grub/grub.cfg.

And what I'd specified in the original post is that I'm looking for a better way to change it, something that won't get overwritten when I run a grub-mkconfig, something that is.. well, not just editing that file.

#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#

progandy · 2013-11-16 02:50:36

I believe you should add the following to /etc/default/grub

export GRUB_DISABLE_LINUX_UUID=true
export GRUB_DEVICE="LABEL=mylabel"

WonderWoofy · 2013-11-16 02:55:19

ThePacman wrote:

And what I'd specified in the original post is that I'm looking for a better way to change it, something that won't get overwritten when I run a grub-mkconfig, something that is.. well, not just editing that file.

Yeah, I read that. I just wanted to point out that the instructions you linked to were not what you apparently thought they were... which I guess you had realized by that point. It wasn't meant to be a solution, sorry.

ThePacman · 2013-11-16 17:56:05

progandy wrote:

I believe you should add the following to /etc/default/grub
export GRUB_DISABLE_LINUX_UUID=true
export GRUB_DEVICE="LABEL=mylabel"

Perfect, thanks!

Arch Linux

#1 2013-11-15 19:53:53

[SOLVED] Is there a better way to get Grub to boot by label?

#2 2013-11-15 20:14:50

Re: [SOLVED] Is there a better way to get Grub to boot by label?

#3 2013-11-15 23:42:55

Re: [SOLVED] Is there a better way to get Grub to boot by label?

#4 2013-11-15 23:51:26

Re: [SOLVED] Is there a better way to get Grub to boot by label?

#5 2013-11-15 23:54:11

Re: [SOLVED] Is there a better way to get Grub to boot by label?

#6 2013-11-16 02:08:41

Re: [SOLVED] Is there a better way to get Grub to boot by label?

#7 2013-11-16 02:50:36

Re: [SOLVED] Is there a better way to get Grub to boot by label?

#8 2013-11-16 02:55:19

Re: [SOLVED] Is there a better way to get Grub to boot by label?

#9 2013-11-16 17:56:05

Re: [SOLVED] Is there a better way to get Grub to boot by label?

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