title: Cannot run mysql after moving data (Fatal error: Can't open and lock privilege tables: Table 'mysql.host' doesn't exist)
body: <p>I come here from this <a href="https://serverfault.com/questions/291126/mysql-fatal-error-cant-open-and-lock-privilege-tables-table-mysql-host-doe">topic</a></p>
  
  <p>Where user has exactly the same problem.</p>
  
  <p>I have installed Winamp (Apache+Mysql). I moved my /data subfolders (backup) to mysql/data (installed folder). I originally had error that my port is in use, so I changed to 3307. The cause for this error could be freeze of mysqld-nt (not closed, stayed in memory)</p>
  
  <ul>
  <li>port is 3307</li>
  <li>data folder is in my.ini is set correctly</li>
  <li>client run results in close because mysql-nt doesnt run</li>
  <li>mysqld-nt Freezes console.</li>
  <li>cannot run console</li>
  <li>mysqld-nt is closed (manually)</li>
  </ul>
  
  <p>I am Windows user. My Mysql is part of Wamp server and has no any mysql_install_db
   in bin folder. I don't use linux so I cannot use linux commands. Also I cannot run client bevazse server connection is not established so cannot type the command for client.</p>
  
  <p>Please help.</p>