DVD drives - DMA and PIO modes


  1. DarkStar GT
    Posts : 258
    Windows Home Premium (64)
       New #1

    DVD drives - DMA and PIO modes


    If Windows XP detected several errors when accessing DVDs, the access mode was dropped from DMA to PIO. The (only?) way to recover was to uninstall the DVD driver and reboot. XP would detect new hardware and (generally) install the right driver, restoring DMA mode.

    Does the same degradation occur in Windows 7? And how is DMA mode restored here?

    Is it the same for DVD drives with SATA interfaces?
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  3. drugo
    Posts : 476
    windows 7 ultimate 64bit
       New #2

    DarkStar GT said:
    If Windows XP detected several errors when accessing DVDs, the access mode was dropped from DMA to PIO. The (only?) way to recover was to uninstall the DVD driver and reboot. XP would detect new hardware and (generally) install the right driver, restoring DMA mode.

    Does the same degradation occur in Windows 7? And how is DMA mode restored here?

    Is it the same for DVD drives with SATA interfaces?
    still no answer
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