Linux doesn't recognize SATA drives
So I recently bought an Intel D915PCY motherboard because it supports 4 SATA drives and was reletively inexepensive. When I go to install Linux (any distro, I've tried the latest releases of Fedora, Gentoo, and Mandrake) only two of the hard drives are recognized by the system. The only OS that acknowledges all 4 drives is Windows XP. I haven't taken the time to open up my case again and figure out which two drives aren't being detected, but then that isn't really the issue, since I know that they are working properly. Is this an issue with the 915 chipset and Linux support for it, or is there something that I'm overlooking when installing that would reveal the presence of the mystery drives?