IDE排線的排列也有關係, 先前有網友建議:
Primary IDE: HD(primary), DVD-R(slave)
Secondary IDE: DRD-rom(primary)

但此接法在小弟的PC卻行不通, DVD-R是A06要如此接才能開啟DMA
Primary IDE: HD(primary), DVD-rom PIONEER 121(slave)
Secondary IDE: DRD-R PIONEER A06(primary)