Have u loaded up the IDE Master 3.11 Beta (do not install from the 4-in-1, do a standalone) and MSI's BIOS 2.2??
Mine before didn't work even after swapping drives, but when I installed the two updates above and put all my IDE peripherals on Primary, it is now very stable. Still unhappy though cos Secondary IDE is next to useless now when its unstable under DMA mode.
MSI suggested I used ATA66 cable for secondary devices, tried it and its no good (u guys might have better luck here). Now waiting for their reply.....
Rgds,
OC.