[ Thanks to Linux-news for this link.
]
“So you forgot your root password of your linux box?, well its
not the end of the world if you do have physical / KVM over IP
access to your box, you can start it on single user mode and reset
it. Don’t know how?… then read on.“In all honesty, this fix really depends on which boot loader
your box is running. Normally on modern Linux distros the loader
will be GRUB.“In this case, how to get into single user mode using Grub boot
Loader?”