How to know the chosen GRUB2 entry?

Question

Is there a file that contains the option of the GRUB2 menu that was chosen for the current boot? This question is different from obtaining the Kernel boot sequence, for example, to differentiate two boot options with the same boot sequence.

score 1 · Answer 1 · answered Oct 22 '18 at 17:46

1

I belive if you have set the grub to save the default grub boot, like so:

/etc/default/grub:

GRUB_DEFAULT=saved
GRUB_SAVEDEFAULT=true

Then you will find it in the /boot/grub2/grubenv file

# more /boot/grub2/grubenv

# GRUB Environment Block
saved_entry=CentOS Linux (3.10.0-693.21.1.el7.x86_64) 7 (Core)

For more info, please go here https://www.gnu.org/software/grub/manual/grub/html_node/Environment-block.html

answered Oct 22 '18 at 17:46

PhoenixCoder

45

That is my /etc/default/grub configuration. However the /boot/grub/grubenv file just shows
GRUB Environment Block

next_entry = #######...#########
– R Cassani Oct 22 '18 at 18:13
Since your question was about grub2, did you check /boot/grub2/grubenv? – PhoenixCoder Oct 23 '18 at 03:45
you could also check the output of this command:
grub2-editenv list
– PhoenixCoder Oct 23 '18 at 03:58
I checked /boot/grub/grubenv as I'm using Mint, and grub2 commands are named grub, even when the GRUB version is 2.02 – R Cassani Oct 23 '18 at 18:16

How to know the chosen GRUB2 entry?

1 Answers1

GRUB Environment Block