我想从I9O*Kez ---> SO123*

我执行这些

mysql -u root -pI9O*Kez

service mysql stop 
mysqld_safe --skip-grant-tables &
mysql -uroot

use mysql; 
delete from user where User='root';

CREATE USER 'root'@'%' IDENTIFIED BY 'SO123*';
GRANT ALL PRIVILEGES ON * . * TO 'root'@'%';

我不断得到

ERROR 1290 (HY000): The MySQL server is running with the --skip-grant-tables option so it cannot execute this statement

我做这些完全错了吗？

仅更新root密码就不那么困难-对吗？