How to Set Up Root Password for Your MySQL ServerBy Angsuman Chakraborty, Gaea News Network
Saturday, January 17, 2009
If you have never set a root password for MySQL, the server does not require a password at all for connecting as root. To set up a root password for the first time, use the mysqladmin command at the shell prompt as follows:
$ mysqladmin -u root password newpass
If you want to change (or update) a root password, then you need to use the following command:
$ mysqladmin -u root -p oldpassword newpass
I hope this will work for you perfectly.