This may be an issue where your install disk doesn't have the sata driver for your motherboards sata controller. You may be able to use legacy/IDE mode emulation in the BIOS, but that'll cut out the features of ACHI. Basically this means your HDD's won't operate as true sata with hot swap, not sure what else you'd miss out on.
Or you may be able to load the SATA driver. Without more information I really cannot say for sure what your issue is though.