grub

GNU GRUB is a Multiboot boot loader. It was derived from GRUB, the GRand Unified Bootloader

http://www.gnu.org/software/grub/

Change boot order on Ubuntu 10.04

• Check the Ubuntu version with lsb_release -a

• Check the number of existing entries running update-grub

• Count the number of entries found

• Edit the file /etc/default/grub and change the parameter GRUB_DEFAULT=X, where X is the entry number desired to be the default one

• Run again update-grub to update /boot/grub/grub.cfg

• Reboot the machine and check if the desired entry appears selected on the grub boot options