I have already seen http://dev.mysql.com/doc/refman/4.1/en/mysql-config-wizard-file-location.html
how to know mysql my.cnf location
and
http://dev.
In my case, the folder ProgramData was hidden by default on windows 7, so I was unable to find my.ini file.
After selecting show hidden files and folders option, I was able to find the my.ini file at the location: C:\ProgramData\MySQL\MySQL Server 5.6.
Display hidden files and folders on windows 7:
Right-click the Windows Logo button and choose Open Windows Explorer.
Click Organize and choose Folder and Search Options.
Click the View tab, select Show hidden files and folders and then clear the checkbox for Hide protected system operating files.
Click Yes on the warning and then click OK.