I have the IBM drive which is ATA/100, but the Highpoint controller on the ABit is only ATA 66. SHould it matter? Because every time i try to install an OS, it either doesn't work or it is very unstable. Even win98 didn't work with it. Is it because I can't run a faster drive on a slower port? I've ran a ata 66 drive on a standard IDE port in the Soyo 6BA+IV.. Can anybody out there please tell me what is wrong? I have the jumpers set as a master for 16 heads. Everything looks fine in BIOS. Please help. THanks.