CentOS - May 2007 - Intel DG965RYCK with CentOS 5

Hi,

I am trying to install CentOS on an Intel DG965RYCK. I had came to DRUID and 
wanted to customize the PATA Harddisks for RAID. But it would not detect the 
harddisks. In the CMOS, both the 500 GB IDE Harddisk are being detected.

Any idea?

Thanks