MySQL 4.1.21 설치후 접속 오류 해결 (28000): Access denied for user 'root'@'localhost' (using password: NO)

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MySQL 4.1.21 설치후 접속 오류 해결

해당오류
- ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)
- ERROR 2003 <HY000>:Can't connect to Mysql server on 'localhost'<10061>
- mysqladmin: connect to server at 'localhost' failed
- error: 'Can't connect to MySQL server on 'localhost' (10061)'

Enter password: ******
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 4 to server version: 4.1.21-community-nt

Type 'help;' or '\h' for help. Type '\c' to clear the buffer.

mysql> use mysql;
Database changed
mysql> update user set password=password('sqldba') where user='root';
Query OK, 0 rows affected (0.00 sec)
Rows matched: 2  Changed: 0  Warnings: 0

mysql> delete from user where user='';
Query OK, 0 rows affected (0.00 sec)

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

mysql>