[CentOS] post install raid1

Fri Sep 1 18:19:28 UTC 2006
CentOS List <centoslist at gmail.com>


I had a CentOS running and working fine. Recently i had upgraded it to 4.4. 
I would like to do a raid1 on this machine. Is it possible to do it? Or do i 
need to reinstall the system with raid1?