> I do have a SIL3114 chipset, and I think it's supposed to be supported > by device mapper. When I go to rescue mode, I see it loading the driver > for SIL3112, but nothing appears under /dev/mapper except control. Are > there instructions somewhere on getting it to use my controller's raid? Your controller only has a bios chip. It has no raid processing capability at all. You need to use mdadm. anaconda should be able to let you create to mirrors and then create a third array that stripes those md devices,