(mysql.info) windows-upgrading

(mysql.info) windows-troubleshooting
 
 2.3.14 Upgrading MySQL on Windows
 ---------------------------------
 
 This section lists some of the steps you should take when upgrading
 MySQL on Windows.
 
   1. Review  upgrade, for additional information on upgrading
      MySQL that is not specific to Windows.
 
   2. You should always back up your current MySQL installation before
      performing an upgrade. See  backup.
 
   3. Download the latest Windows distribution of MySQL from
      `http://dev.mysql.com/downloads/'.
 
   4. 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 it:
 
           C:\> "C:\Program Files\MySQL\MySQL Server 5.0\bin\mysqladmin" -u root shutdown
 
      * If the MySQL `root' user account has a password, you need
      to invoke `mysqladmin' with the -p option and supply the password
      when prompted.
 
   5. When upgrading to MySQL 5.0 from a version previous to 4.1.5, 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.*
 
   6. If you are using the MySQL Installation Wizard, start the wizard
      as described in  windows-install-wizard.
 
   7. If you are installing MySQL from a Zip archive, extract the
      archive. You may either overwrite your existing MySQL installation
      (usually located at `C:\mysql'), or install it into a different
      directory, such as `C:\mysql4'.  Overwriting the existing
      installation is recommended.
 
   8. If you were running MySQL as a Windows service and you had to
      remove the service earlier in this procedure, reinstall the
      service. (See  windows-start-service.)
 
   9. Restart the server. For example, use `NET START MySQL' if you run
      MySQL as a service, or invoke `mysqld' directly otherwise.
 
  10. If you encounter errors, see  windows-troubleshooting.
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