mysql> grant select,insert,update,delete on *.* to 'root'@'%';
ERROR 1290 (HY000): The MySQL server is running with the --skip-grant-tables option so it cannot execute this statement

mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)

mysql> 
mysql> 
mysql> 
mysql> grant select,insert,update,delete on *.* to 'root'@'%';
Query OK, 0 rows affected, 1 warning (0.00 sec)

mysql> grant all on *.* to 'root'@'%';
Query OK, 0 rows affected (0.00 sec)