Installing 5.4-S on nvidia raid1?

[Brandon Fosdick]

I have a DFI Lanparty nf4 Ultra-D with two 80GB drives configured as a raid1 array. The bios lists the array as scsi-0 and claims that its healthy. When I boot from the disc1 cd and try to do the usual install the only device options I'm given for fdisk are ad4 and ad6, which obviously aren't a scsi array. Just the be sure I ran dmesg in the holographic shell and it shows ad4 and ad6 as the two 80GB drives. So how do I install to the raid array?