To set new root password if u foret one

The method i know for this is....
1) While booting at 'bootrecord', press 'e' to edit.
2) You can see the kernal-hd0 by moving the arrows.
3) Highlight that and then press enter.
4) Now press the space bar once and type single and then press enter.
5) Press b to boot.
6) You will get sh#
7) Type passwd root
8) And retype the password.
9) Then type reboot to boot again.