GNU GRUB is a Multiboot loader. It was been derived from the GRUB. It is an effort made to generate a bootloader for IBM PC-compatible machines which has both the ability to be friendly to beginning or else non-technically interested users for the elasticity to help the experts in different environments. It is well-matched with Free/Net/OpenBSD and Linux. It also supports the Win 9x/NT as well as OS/2 via the chain-loaders. It has a menu interface and a command-line interface.