How to activate root user in Ubuntu

In Ubuntu Linux Operating Systems, by default the root account password of Ubuntu Linux  is locked. so when you do "su root" you will get authentication failure error message below.The graphical user interface cannot be accessed with the sudo commands. so in this case you need to activate the root account.

$ su -

Password:

su: Authentication failure

To enable the root account and access directly via the console in root mode,  

Step 01

Open Terminal console in ubuntu

Step 02

Type following command

"sudo passwor root"

When you type your user password it will ask to Enter the new UNIX password for the root account. Type what ever Password that you want and hit enter.

Retype the password and hit Enter.  

When its successful try to login to the root account using this command "su root" and type the password. Hit Enter and see the Miracle LOL!!!

Enjoy Guys!!