After the complete installation of the Ubundu, i tried to login with ‘root’, but i dont know the password. I don’t think the installation process of Ubuntu asking the password of ‘root’. I installed the Ubuntu via Windows using wubi.exe(dual boot) and it asks for personal username and password in the installation wizard. i used the same username to get in to Ubuntu.
But in some cases, i need the root authentication to access Ubuntu in depth. Here i found the way to change the ‘root’ password.
Press ‘Unlock’ and unlock by your username and password, select the ‘root’ in the lists and click the ‘Properties’ button.
Here, you can type the new password for ‘root’ login. thats all.