Ubuntu 10.10 Grub2 menu howto Show / Hide

Here some instructions on how to show or display the grub2 menu during the Ubuntu startup.

from the menu select Applications - Accessories - Terminal and write the command:

sudo gedit /etc/default/grub


search for this line:

GRUB_HIDDEN_TIMEOUT=0


well, this way the menu is HIDDEN
if we want to SHOW it at every startup, we need to comment out that line using # ,like this :

# GRUB_HIDDEN_TIMEOUT=0


save the opened file after the change
then write this command:

sudo update-grub


as soon as it finish to update everything,  we can reboot the system and see the new menu behaviour.

To HIDE it again simply do the same, remove the # symbol, save, run update-grub and it's done