Anaconda sees 2 SATA Drives as One

Hello,
I have 2 SATA Drives, blank, no partitions. I have them plugged into the motherboard which
is an ASUS P4P800 Deluxe.
When I run the installer, Anaconda shows only one drive and labels it as Linux Device
Manager or something like that.
What's going on and how can I see both drives independently?
EJ