GRUB_CMDLINE_LINUX_DEFAULT vs GRUB_CMDLINE_LINUX

Question

What is the difference between these two options in /boot/default/grub

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
GRUB_CMDLINE_LINUX=""

score 53 · Accepted Answer · answered Apr 30 '18 at 17:23

53

GRUB_CMDLINE_LINUX Entries on this line are added to the end of the 'linux' command line (GRUB legacy's "kernel" line) for both normal and recovery modes. It is used to pass options to the kernel.
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" This line imports any entries to the end of the 'linux' line (GRUB legacy's "kernel" line). The entries are appended to the end of the normal mode only. To view a black screen with boot processes displayed in text, remove "quiet splash". To see the grub splash image plus a condensed text output, use "splash".

They're pretty horrendously named for having to do predominately with the modes in which they apply and not having anything to do with DEFAULT.

answered Apr 30 '18 at 17:23

Evan Carroll

3

well i guess the "default" would suggests default (normal) boot, as opposed to recovery mode, but I completely agree! espetially considering how long they made that parameter title, they couldve made it more clear – Nick Bailuc Aug 06 '20 at 09:01
3

Horrendously named indeed. – RichieHH Apr 16 '21 at 05:12
1

Thank god I looked it up before assuming what they are! – BrainStone Mar 15 '22 at 03:34
1

I added lines `# normal and rescue mode` and `# normal mode only` because I'll totally forget this in a year. Thanks! – Bill McGonigle Apr 20 '23 at 22:28
So what variable adds lines only to recovery modes? – Dan Jacobson Jul 01 '23 at 13:57
1

Oh, https://mail.gnu.org/archive/html/grub-devel/2021-09/msg00086.html – Dan Jacobson Jul 01 '23 at 14:17

1 Answers1