On Thu, 2003-12-11 at 22:27, Rune Maagensen wrote: > using_dma = 0 (off) try hdparm -i device, to see what modes are suported by hdd and a cat /proc/ide/piix for more info, my optinion is you can safely turn on simple dma(hdparm -d1 device), you can only worry about udma modes (-X66 ->-X69), that's the only way i can get an irq timeout on the hdd.