Pioneer DVD-Rom won't use UDMA with 80pin cable

[The Old Man]

Hi,

I have an Asus A7V333 motherboard, AMD XP2100 CPU and Windows XP SP1A
installed.
I have connected a UDMA5 hard drive to the Primary Master socket and it
works fine.
However when I connect my Pioneer DVD-106 DVD-Rom drive to the Secondary
Master it won't use dma mode in the device manager, only PIO mode. These are
the only 2 drives.

I have the latest BIOS version and the drive work fine on my other PC.
The BIOS recognises it as UDMA5 compatible, its just that when I click Use
DMA if available it doesn't want to! I am using an 80pin EIDE ribbon.

Searching Google and MS Knowledge base has produced no luck in fixing this.

Can you help?

Thanks,
Graham.

 

[Rich Barry]

From one Old Man to Another check here
http://www.microsoft.com/whdc/hwdev/tech/storage/IDE-DMA.mspx

 

[Yves Leclerc]

It is really dependant on the motherboard. Some motherbaords only came with
ONE UDMA enabled IDE socket and that is usually the Primary IDE socket.

Y.

 

[George Cruppi]

You can try un-installing the secondary controller from XP and then exit and
reboot. When XP reboots it should redetect the controller and if all is well
reinstall UDMA.

 

[The Old Man]

You can try un-installing the secondary controller from XP and then exit and
reboot. When XP reboots it should redetect the controller and if all is well
reinstall UDMA.

Thanks for the suggestions. I'll give this one a try, failing that I'll buy
another ribbon cable.

Graham.

 

[The Old Man]

You can try un-installing the secondary controller from XP and then exit and
reboot. When XP reboots it should redetect the controller and if all is well
reinstall UDMA.

Thank you George, your suggestion worked a treat.
I uninstalled the Secondary Controller, rebooted.
Upon checking the DVD_Rom drive now displays as UDMA4.

Thank you once again.

Graham