到WINDOWS的命令行了（‘DOS’ 下），切换到你的MySQL bin目录下。 比如我的是 C:/Program Files/MySQL/MySQL Server 5.1/bin然后敲下面的粗体的命令。注意你的my.ini位置。C:/Program Files/MySQL/MySQL Server 5.1/bin>mysqld --defaults-file="C:/ProgramFiles/MySQL/MySQL Server 5.1/my.ini" --console --skip-grant-tables090515 22:06:09 [Warning] The syntax '--log' is deprecated and will be removed in MySQL 7.0. Please use '--general_log'/'--general_log_file' instead.090515 22:06:09 [Warning] The syntax '--log_slow_queries' is deprecated and will be removed in MySQL 7.0. Please use '--slow_query_log'/'--slow_query_log_file'instead.090515 22:06:09 [Warning] The syntax '--log' is deprecated and will be removed in MySQL 7.0. Please use '--general_log'/'--general_log_file' instead.090515 22:06:09 [Warning] The syntax '--log_slow_queries' is deprecated and will be removed in MySQL 7.0. Please use '--slow_query_log'/'--slow_query_log_file'instead.090515 22:06:09 [ERROR] The update log is no longer supported by MySQL in version 5.0 and above. It is replaced by the binary log. Now starting MySQL with --log-bin='' instead.090515 22:06:09 InnoDB: Started; log sequence number 0 324221090515 22:06:09 [Note] mysqld: ready for connections.Version: '5.1.33-community-log' socket: '' port: 3306 MySQL Community Server(GPL)看到这个结果就说明MySQL已经起来了。再开一个DOS窗口，同样切到mysql bin目录下，C:/Program Files/MySQL/MySQL Server 5.1/bin>mysql -uroot mysqlWelcome to the MySQL monitor. Commands end with ; or /g.Your MySQL connection id is 2Server version: 5.1.33-community-log MySQL Community Server (GPL)Type 'help;' or '/h' for help. Type '/c' to clear the buffer.mysql>到这，你就继续按 方法一：操作就行。update完表后，退出，然后C:/Program Files/MySQL/MySQL Server 5.1/bin>mysqladmin shutdown之后正常重启MySQL服务就行了。
方法一： # /etc/init.d/mysql stop # mysqld_safe --user=mysql --skip-grant-tables --skip-networking & # mysql -u root mysql mysql> UPDATE user SET Password=PASSWORD(’newpassword’) where USER=’root’; mysql> FLUSH PRIVILEGES; mysql> quit # /etc/init.d/mysql restart # mysql -uroot -p Enter password: <输入新设的密码newpassword> mysql>
