mysql启动失败 1067进程意外终止

1,错误原因：修改了mysql的配置文件my.ini

2,查看错误：

my.ini配置文件的部分代码：

[mysqld]  
# The TCP/IP Port the MySQL Server will listen on  
port=3306  
  
#Path to installation directory. All paths are usually resolved relative to this.  
basedir="D:/MySQL/"  
  
#Path to the database root  
datadir="C:/Documents and Settings/All Users/Application Data/MySQL/MySQL Server 5.1/Data/" 

看过之后就去找datadir目录(在C:/Documents and Settings/All Users/Application Data/MySQL/MySQL Server 5.1/Data/下)，错误日志应该是你的主机名.err

3,解决方案：重新配置,双击\mysql\bin\MySQLIntanceConfig.exe