Making the grub beep on displaying the menu
In grub2, when the menu is displayed it by default does not make any sound to alert the user about the display.
This behavior can be changed so that the grub creates a beep sound as soon as the grub menu gets displayed, so that the user, if he or she is not looking at the monitor, gets notified about the display.
Open the file
and go to the line
# GRUB_INIT_TUNE=”480 440 1″
Uncomment the the line by removing the “#” in the beginning.
Save and quit the file.
Now run the command
$ sudo update-grub
Now reboot the system and we should be able to hear a beep when the grub menu gets displayed.