Upgrade MySQL

原先使用的是MySQL 4.0.24，现在的最新版本是MySQL 4.1.13。
察看了官方网站的Upgrading MySQL on Windows：

Download the latest Windows distribution of MySQL from https://dev.mysql.com.

Before upgrading MySQL, you must stop the server.

If the server is installed as a service, stop the service with the following command from the command prompt:

C:\> NET STOP MySQL

If you are not running the MySQL server as a service, use the following command to stop the server:

C:\> C:\mysql\bin\mysqladmin -u root shutdown

When upgrading to MySQL 4.1.5 or higher from a previous version, or when upgrading from a version of MySQL installed from a Zip archive to a version of MySQL installed with the MySQL Installation Wizard, you must manually remove the previous installation and MySQL service (if the server is installed as a service).

To remove the MySQL service, use the following command:

C:\> C:\mysql\bin\mysqld --remove

If you do not remove the existing service, the MySQL Installation Wizard may fail to properly install the new MySQL service. （我就是这一步没有做，造成安装失败）后来运行了以下命令，删除了该服务
c：>sc delete mysql

所以我是先卸载MySQL 4.0.24，再安装的MySQL 4.1.13，安装时的默认字符集选用"latin1"，虽然在BLOG中的字符集设为utf8，但是原先MySQL 安装时Server就是用的"latin1"，如果现在改为"utf8"，会造成数据库中的中文变成乱码。
原先root用户的密码是空，现在安装后就有密码了，所以要修改mt目录下，mt-db-pass.cgi文件中的密码。

现在运行MovableType，一切ok。

下载安装时间：一小时。
测试时间：15分钟。
难度：中。