When I installed Ubuntu, I did not add a password since I am using only of movies and music. Now I am using it for other purpose as well.
So when I launch Ubuntu, it does not ask login password.
I want to add a password. I tried system>preference>about me and system>passwords and encryption keys but none of them ask me password when I start Ubuntu.
Could anyone tell me how to add a password to login?
Thanks in advance.