linux grub: change default

ever wanted to change your default boot selection in grub? in grub selection, count from the top of the list to the item you want to set as default, starting with the number zero (zero is the first item in the list) so, count 0, 1, 2, 3 ... then, edit your /etc/default/grub and change the grub_default value to the sequence number of the item you just counted save then reboot