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  1. #1
    Registered User mastodont's Avatar
    Join Date: Feb:2004
    Posts: 49

    solultion: DVD 40 . 8

    ..
    , .
    WINXP has nasty habit of permantly disabling DMA after reading
    a bad cd and enabling PIO mode
    http://support.microsoft.com/?kbid=817472

    only way to fix is modifying registry as follows
    navigate to here
    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControl Set\Contro
    l\Class\{4D36E96A-E325-11CE-BFC1-08002BE10318}

    It has subkeys like 0000, 0001, 0002, etc. Normally 0001 is the primary IDE channel, 0002 the secondary, but other numbers can occur under certain circumstances. Check the DriverDesc value to see which one it is.

    Delete MasterIdDataChecksum or SlaveIdDataChecksum, depending on whether the device in question is attached as master or slave, but it can't actually hurt to delete both. Reboot. The drive DMA capabilities will be redetected.
    Open Device Manager again and should be using DMA mode

    !

  2. #2
    Registered User babayaga's Avatar
    Join Date: Mar:2004
    Location:
    Posts: 218
    ,

  3. #3
    Member Executor's Avatar
    Join Date: Jul:2004
    Location: Sofia
    Posts: 1,136
    ! . !
    Gatecrasher
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