# /etc/init.d/mysql stop - Lauch mysql with --skip-grant-tables (WARNING: your mysql server will launch without any password authentication, so please protect it first with a firewall or something if it's world accessible) # mysqld_safe --skip-grant-tables - Login as root without a password $ mysql -u root - Change the password mysql> use mysql; mysql> update user set password=PASSWORD("your_new_root_password") where User='root'; mysql> flush privileges; mysql> quit - Stop mysql # /etc/init.d/mysql stop - Start mysql again to re-enable authentication # /etc/init.d/mysql start