[CentOS] CentOS 5 x86_64 install does not see SATA drives

hi.

I am having some problems installing CentOS 5.2 x86_64 onto a
Supermicro 6015V-T with Intel 5000V chipset and ESB2 controller using
SATA drives. Currently I am running CentOS 4.7 i386 and it sees both
drives but when I boot into the CentOS 5 install CD it fails to see
the drives. Does anybody have any tips for getting the drives visible?

Kind regards,

Dougal