Lost root level password on Linux CentOS

Q:

I have lost my system (centos 4.3) root password,
I have change try to change the root password by the command “change password” but I receive the message “error 32 you must be authentificated”

Thank you,

A:

You need to boot into single user mode (by sitting in front of the actual computer)

Then you can reset it from there.

Quoted from another post:

“Boot into single user mode. You can do that by modifying the grub boot option on startup.

1. Press ‘e’ to edit startup
2. Use the arrow keys to highlight the kernel line and pres ‘e’ to edit the parameters