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.
GRUB_TIMEOUT=5
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.


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Abdullah As-Sadeed

Abdullah As-Sadeed