How to Change GRUB Timeout on Debian 12 Bookworm

a) Configuring GRUB

Open the /etc/default/grub file on your favorite text editor with superuser privileges and edit following value.
It specifies the time in seconds to wait for keyboard input before booting the default menu entry. Also, 0 means boot immediately and -1 (unset) means wait indefinitely.

b) Updating GRUB

sudo update-grub or sudo update-grub2 (Both of the commands are the same.)
It may take some time.


Abdullah As-Sadeed

Abdullah As-Sadeed