Article Source Linux Journal
June 11, 2009, 9:37 am

The following methods can be used for resetting the root password if the root password is unknown.

If you use GRUB for booting, select the system to be booted, and add 1 to the end of the kernel boot command. If you're not presented with an edit “box” to add boot parameters, try using GRUB's edit command (the letter e). The 1 tells the kernel to boot to single-user mode...