Recovering root password

[Visio]

Recovering your root password using GRUB boot loader:

1. Boot the affected system to the GRUB loader
2. Select your operating system and type E for edit
3. Select kernel and type E for edit
4. Select boot and add runlevel 1 or single to the end of the line
5. Press Enter and hit B for boot
6. At the sh prompt, use passwd to change the password
7. Reboot the PC

Recovering your root password using LILO boot loader:

1. Boot the machine to the LILO prompt
2. Type linux 1 or linux single to enter single user mode
3. At the prompt, use passwd to change the password
4. Reboot

[gaurav_verm11]

i have one doubt vijay --if any one set password on Grub level then how to recover root password.....?