每当我写命令“C:\ProgramFiles\MySQL\MySQLServer5.0\bin\mysqld”时，命令提示符会返回类似这样的内容:C:\>"C:\ProgramFiles\MySQL\MySQLServer5.5\bin\mysqld"1411103:12:58[警告]无法创建测试文件C:\ProgramFiles\MySQL\MySQLServer5.5\data\Dutta.lower-test1411103:12:58[警告]无法创建测试文件C:\ProgramFiles\MySQL\MySQLServer5.5\data\Dutta.lower-test1411