The GRUB boot loader could be considered the next generation of boot loader, following LILO. Most visibly to users, it provides a menu interface instead of LILO's primitive prompt. For system administrators, the changes are more significant. GRUB supports more operating systems than LILO, provides some password-based security in the boot menu, and is easier to administrate.

GRUB is usually installed with the grub-install command. Once installed, GRUB's menu is administrated by editing the file /boot/grub/menu.lst. Both of these tasks are beyond the scope of this document; you should read the GRUB info pages before attempting to install or administrate GRUB.