Hi, I have a motherboard that has the Sil 3512 chipset for SATA RAID. I made a RAID-0 set for my hard drives in the BIOS. I installed FC5 from DVD and it recognized the RAID set as a single hard drive...perfect! The problem is that FC5 is too new for me and some stuff doesn't work. I want to downgrade to FC4. Is there any way to get the FC4 installer to recognize my RAID set as a single hard drive like the FC5 installer does? Thanks for the help. P.S. I know "hdparm -t" is a crappy test, but FC5 using the Sil 3512 for RAID got 85 MB/s, where as FC4 using the same hard drives and 100% software RAID got 50 MB/s.