I have a AMD 3800+ on a ASUS M2nPV-VM and 2 SATA HDDs -one 160GB & the other 250GB in RAID . The system is working on WinXP sp2. The System recognizes the 160 GB with all partitions but fails to show the 250GB in My comp. The BIOS shows both HDDs. Device Manager also shows both the HDDs as working properly.