2

I tried to change my grub file to select kernel 5.14.21, which is the 2nd one in the list:

GRUB_DEFAULT=1
GRUB_TIMEOUT_STYLE=hidden
GRUB_TIMEOUT=0
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
GRUB_CMDLINE_LINUX=""

After doing sudo update-grub, I rebooted the computer and the problem persists. How can manually set my default kernel?

Levent Ozbek
  • 163

1 Answers1

0

Use this for the variables:

GRUB_DEFAULT=my-special-boot-entry
GRUB_TIMEOUT=5
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT=""
GRUB_CMDLINE_LINUX=""

Additionally, in /boot/grub/grub.cfg set an ID for your preferred entry:

menuentry 'My Linux' --class debian --class gnu-linux --class gnu --id 'my-special-boot-entry' {…

Removing splash and quiet in /etc/default/grub from gives you the chance for debugging the behaviour.

I guess you've already found the helpful manual: https://www.gnu.org/software/grub/manual/grub/html_node/Simple-configuration.html

Erich
  • 385