> not all systems work good with DMA on. especially some VIA > chipsets. i had major problems with DMA on them so i stopped > using the onboard ide and started using promise ata100 cards > in their place. > > older motherboards are even worse
A little while ago I heard that this is due to fundamental flaws in hardware design/implementation, i.e. some disagreeable interaction between PCI and ATA, especially when (U)DMA is involved. -Andrew
