If you work on Ubuntu and want to see the Grub Menu by default, you can easily do that. First of all if you are wondering why you want to see the Grub Menu, then the answer is that along with many functions, it allows you to enter command-line options easily.

Here is an easy way of making the Ubuntu show the Grub Menu by default. All you have to do is just open up the /boot/grub/menu.lst file in your favorite text editor or type the following command:

sudo gedit /boot/grub/menu.lst

Now carefully observe the file and go to a section that reads

## hiddenmenu
# Hides the menu by default (press ESC to see the menu)
hiddenmenu

Put # before hiddenmenu, doing this will not make the Operating System read this line. The file would like :

## hiddenmenu
# Hides the menu by default (press ESC to see the menu)
#hiddenmenu

That’s it, just save the file and the Grub Menu will appear next time on reboot by default.