I added an account to Ubuntu 12.1. It did not ask me for password. Then, it asked for password when I logged in for the first time.

Thus, I need to reset the password. This link gives a method to reset account password:


First, I go to the recovery mode of Ubuntu.
Unfortunately, when I enter: "mount -o rw, remount /", it echoes:

mount: special device remount does not exist

So, what is the problem to reset the password.