Changing the boot order in a dual-boot configuration
The default entry for booting in a dual-boot Ubuntu 14.04 and Windows configuration is the first entry in the list. The dual-boot configuration uses Grub2 for the boot manager. The settings are under /etc/default and not Grub’s /boot/grub location. While there are GUI ways to update the order (Grub-Customizer from the Software Center), people have had mixed results with it. It is easy to go the text file route to change the order.
- sudo vi /etc/default/grub
- find the GRUB_DEFAULT=0 line and change 0 to 5. The 5 corresponds to the zero based entry on the boot menu
- save the file
- run sudo update-grub
If you put an entry in for the index that’s invalid, then the boot loader will use 0 instead.