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Old Jun 14, 2002, 02:31 PM
thebigbeef thebigbeef is offline
Join Date: Jun 2000
Location: UK.
Posts: 556
Question WinXP : Dvd-Rom changed from DMA to PIO Mode. Stuck! Help!

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I am currently using Window XP

I have been successfully doing cd copies on the fly from my Toshiba 1402 Dvd-Rom drive to my Liteon 24x Burner.

But my system started to hang lately and I was having problmes with my dvd-rom reading speed. Cpu usage was going sky-high.

I have checked the IDE Controllers and my Dvd-Rom is now set to PIO mode. I Selected "DMA IF POSSIBLE" in the advanced tab and restarted my machine.

The drive is still in PIO MODE

Primary IDE

LS120 Drive DMA


Toshiba Dvd-Rom PIO
Liteon 24x Writer DMA

Is there any way I can force the dvd-rom back to DMA mode? It was in DMA when I set up the PC but the system has changed it for some reason and won't let me alter it to DMA again.

Any Ideas?

Old Jun 14, 2002, 02:45 PM
XndeX XndeX is offline
Junior Member
Join Date: Jan 2001
Posts: 29

It might be something in the bios I'd look their to make sure!
Old Jun 14, 2002, 11:35 PM
rfdion rfdion is offline
Join Date: Mar 2002
Posts: 3

Win XP did the same to my Pioneer 32X CD-ROM from DMA to PIO and was
unable to change it back to DMA.

I went into Control Panel/System/Hardware/Device Manager/DVD-CD-ROM
and Uninstalled the Pioneer CD-ROM then rebooted and let Win XP find
New Hardware on reboot.
I don't really recall if came back as PIO or DMA, if it was PIO I was able to
change this time to DMA and it has held.

It may or may not work for you.

Old Jun 15, 2002, 01:54 AM
thebigbeef thebigbeef is offline
Join Date: Jun 2000
Location: UK.
Posts: 556

Right then

Have sorted it

Uninstalled the dvd-rom drive and then re-booted
If found the drive and installed itself BUT it was still stuck in PIO mode.

So I Uninstalled the SECONDARY IDE DRIVER (which my dvd-rom was under)
Rebooted the machine, it installed the IDE Driver and re-found the dvd-rom drive

Now the dvd-rom is back into DMA mode.

Cheers for the responses.



MODS - Will leave this up for a few days then I will delete whole post.
Old Jul 14, 2002, 10:56 AM
freakit freakit is offline
Join Date: Aug 2001
Posts: 1,317

mine is at DMA if available. i'm having trouble burning on the fly. it takes 9=10 minutes at 24x in WINXP Pro. before with the same hardware and burn speed i was able to burn the same cds in 3-4 minutes using WIN 98 SE. i'm using clone cd. i tired other programs and they are slow too.
Old Jul 16, 2002, 07:48 PM
GodfatherUK GodfatherUK is offline
Join Date: Jun 2002
Posts: 573

the forced PIO mode in XP is a common prob.

if it happens - dont worry. do as explainded above

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