A bootable floppy or CDROM that is oriented towards system rescue.
Super Grub Disk is a bootable floppy or CDROM that is oriented towards system rescue, specifically for repairing the booting process.
Super Grub Disk is simply a Grub Disk with a lot of useful menus.
It can activate partitions, boot partitions, boot MBRs, boot your former OS (Linux or another one) by loading menu.lst from your hard disk, automatically restore Grub on your MBR, swap hard disks in the BIOS, and boot from any available disk device.
Super Grub Disk project has multi-language support, and allows you to change the keyboard layout of your shell.
You can download the super grub disk from here:
grub-rescue-cdrom.iso