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Hello
I have LG crd-8483b CD-ROM ( It is not support DMA I think) with WinME
I can enable (force) DMA however and get good proformance >>
now I cannt do that with Winxp ((( I know how to slove problems with DMA settings with device Manager )))
But ... How to force PIO mode device to use DMA
(can I )((was burn CD in 2:25 min >>> now 7.00 min ))

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PIII 700 MHz
Asus p3b-f motherboard
segate HDD master ,Lg crd-8483B firmware 1.00 primery slave ,sony crx210a1 firmware 2ys1 secondery slave
nero 5.5.10

If deleting the IDE channel and your burner from Device Manager doesn't help, open the Registry (Start -> Run -> Regedit), find the key below and do the following:

HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Control \ Class \ {4D36E96A-E325-11CE-BFC1-08002BE10318} \ 000x

Last four digits are likely 0001, 0002. Under those keys you will find MasterIdDataChecksum, SlaveIdDataChecksum.
Delete the value corresponding to your drive. It will make the OS to redetect the device DMA capabilities after reboot.

Note that for many older CD-ROM drives DMA can not be enabled in Windows 2000/XP.

Thanks Han >>>> I will try it