背景：mysql在E盘，但是C盘重装系统，以前的注册表之类的都没有了，想重新恢复mysql的使用。
1. 配置以前的环境变量
2. 按照下面的步骤注册并启动服务
C:\Users\Administrator>net stop mysql 没有启动 mysql 服务。 请键入 NET HELPMSG 3521 以获得更多的帮助。 C:\Users\Administrator>sc delete mysql [SC] DeleteService 成功 C:\Users\Administrator>E: E:\>cd /d "E:\Mysql\mysql-5.7.37-winx64\bin" E:\MySQL\mysql-5.7.37-winx64\bin>mysqld --install mysql --defaults-file="E:\Mysql\mysql-5.7.37-winx64\my.ini" Service successfully installed. E:\MySQL\mysql-5.7.37-winx64\bin>net start mysql mysql 服务正在启动 . mysql 服务已经启动成功。 E:\MySQL\mysql-5.7.37-winx64\bin>mysql -u root -p Enter password: ******* Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 2 Server version: 5.7.37 MySQL Community Server (GPL) Copyright (c) 2000, 2022, Oracle and/or its affiliates. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql>
