[CentOS] Mysql databases from old system?

Last week I had a hard disk failure on my CentOS server.
I managed to re-install CentOS on a new disk.
I have the old mysql databases from /var/lib/mysql .
Can I just move them to my new disk?

Any help or suggestions gratefully received.

-- 
Timothy Murphy  
e-mail: gayleard /at/ eircom.net
School of Mathematics, Trinity College, Dublin 2, Ireland