====== Default grub item on Ubuntu ======
When using dual boot and GRUB is the boot loader of choice, you can do this simple tweak to set another option as a default option.

  - Edit **/etc/default/grub** and change the line **GRUB_DEFAULT=0** to **GRUB_DEFAULT=saved**, and save the file.
  - Run the **update-grub** command
  - Run the **grub-set-default 4** command, where 4 (in this case) is the fifth option. The options start at position 0, so check the options order at boot time.

And that's it. At next boot, the default option will be (in this case) no 5.