Change data directory mysql

[haihq]

Hi all

I use FreeBSD 7.2.  Mysql .-5.0.90.  I want change data directory mysql. I
try set datadir OR my_data_dir = /new_ path (in /etc/my.cnf) but not done. I
try something as: set  mydatadir="/new_path" on rc.conf. Answer is not work.

 

Help for new bie