Make Grub2 Boot the Last Operating System You Used
- POSTS
The GRUB2 boot loader can seem confusing at first. Instead of one configuration file, there are several. You run one command update-grub to update the configuration file, another command (grub-install) to write the configuration to the Master Boot Record (MBR) on your hard drive.
On the plus side, GRUB2 can make life much easier if you’re running a dual or multiple boot system – say, switching between Linux and Windows, or hopping between multiple distros.