Read this article and use the Linux shell commands from a terminal window & know how to set the root password in Ubuntu 12.04 LTS version from command line. After setting the password for ROOT user in Ubuntu cross check it.
Ubuntu has no root password by default, you need to set it.
- You need to login as the first user. Here my username is bikram.
- If you have a fresh Ubuntu installation, there is no password set for root user.
$ sudo -u root passwd Enter new UNIX password: Retype new UNIX password: passwd: password updated successfully bikram@linux:~$ su - root Password: root@linux:~#
Lost Root Password ? If you have forgotten the root password or lost it then read this article to recover it.