DMA vs. PIO mode

Hello I have a question regarding DMA and PIO mode. The thing is I had problems installing certain games (NWN and BF1942) until I disabled the DMA mode for my CDROMs. I kept getting CRC errors in the cab files. The drives I tried where a brand new set of asus 4012 and a Liton 165H DVD-rom. All other media (utils/home-burned cd’s and some games) worked fine. Why would certain game cd’s not work in DMA mode!?

// swede_242

I would suspect that the DMA function isn’t working so that the drives only operate properly under PIO mode. Update your DMA driver to the latest version.