How do I move a MySQL database from one hard drive to another?

I am using MySQL 5.5 and MySQLWorkbench on Windows7. I have successfully created a database on my C: drive but I want to move it to my E: drive. I stopped the mysqld daemon and edited the my.ini file to change datadir="C:/ProgramData/MySQL/MySQL Server 5.5/Data/" to datadir="E:/MySQL/data/". I copied the data from the C: location to the E: location. I can start the mysqld process, but the database I created does not appear. Would anyone have any explanation as to what I am doing wrong?