GNU GRUB is a Multiboot boot loader. It was derived from GRUB, the GRand Unified Bootloader, which was originally designed and implemented by Erich Stefan Boleyn.
Boot loader is the first software program that runs when a computer starts. It is responsible for loading and transferring control to the operating system kernel software. There are other programs available like LILO, SYSLINUX and LOADLIN but most famous and easy to use boot loader is still GRUB.
If you have installed a new operating system and your default boot loader is GRUB, you must make a backup of your GRUB configuration so that you can restore the default settings anytime.
You can access your GRUB boot loader by just typing a simple and easy command on your console. check the under given command:
If you need some help about the commands of GRUB please visit the under given URL:
Use the under given command to make a backup copy of your GRUB boot loader:
cp /boot/grub/menu.lst /home/itoperationz/menu.lst_backup