have msi845ultra aru mobo with 1.8 p4 and 512mb crucial pc2100. want to run two identical new maxtor ata133 60gig hdd in raid 0 as the mobo has onboard Promise PDC 20276. so i installed the cd-rom as ...

Use RAID 1 for your OS. It is fault tolerant. You lose the hard drive to failure, you have a spare to move or repoint your boot.ini file. RAID 0 is not fault tolerant. You lose one drive, say bye bye ...