PIO/DMA Problem with Plextor 161040A and Asus A7M266

[Diomedes01]

I recently upgraded my system to:

Asus A7M266
AMD T-Bird 1.2GHz
Radeon 64meg VIVO
256MB Crucial PC2100
Windows 2000
...

After building the system, I decided to upgrade my failing Mitsumi CR-2801 2X burner to a Plextor 16/10/40A. I cannot get DMA mode enabled on the Plextor burner. It is the only device on the Secondary IDE channel, set as master. In the bios, if set to auto detect the device, the PIO mode is set to 4 (fine) and the DMA mode is disabled (not fine!). If I manually reset DMA mode to DMA-2, it gets set back to disabled. If I manually specify the device as a CD-ROM, it fails to initialize on boot. If I specify it as "Other ATAPI device", same thing happens. This is frustrating, because with PIO-only mode, the drive will only rip audio at ~10X, and BURN-Proof keeps kicking in when I burn at 16X.

Any have suggestions? This is driving me crazy...

Thanks,
Will
wbriggs.zoo@uvm@edu
(reverse . and @ to mail me).

 

[Joemonkey]

system properties->hardware tab->device manager->IDE ATA/ATAPI controllers

then, right clickon both primary and secondary IDE channel, go to advanced settings tab, and ghange from PIO to DMA if available

 

[Diomedes01]

Been there, done that. Still says PIO mode in that tab for the drive, even though DMA if available is selected. The problem is that the BIOS is disabling DMA instead of setting it to DMA-2.

-Will

 

[Diomedes01]

Does anyone know of any issues that the A7M266 would have enabling DMA in Windows 2000? This is starting to really bother me, and I'd love to get it all squared away...

Thanks,
Will

 

[bozo1]

There is a jumper you have to set on the Plextor to enable UDMA mode. It is undocumented in the US versions but is documented in the non-US manuals. I believe the latest production model has this enabled but early manufacturing dates do not. The jumper connector on the back is labeled as "Reserved". Just put a jumper on it.

 

[flyers1]

bozo1 is right. You have to put that jumper on to get udma mode.

 

[DigitalDaddy]

Also, I think you have to have a shielded 80 pin cable to enable dma mode. Not positive though.

 

[DigitalDaddy]

http://www.plextor.com/english/support/plexhelper/atapi/gen_a.html

 

[Jay59express]

Will,
Whats up man? Having problems with the new rig already?
Jay

 

[Diomedes01]

'sup Jaydogg?

It was working just fine, but all of a sudden my new Plextor drive started running in PIO mode instead of DMA mode... can't figure out why. Goddamn VIA/AMD/etc... I'm sick of all of the kludged together patches/drivers. Oh well, hopefully once I get everything together it'll run nicely. I'm thinking of getting that new Hercules sound card, looks pretty damn sweet.

-Will

 

[Diomedes01]

Just to let everyone know... I reformatted last night with clean Win2K installed, put on all drivers in the correct order, and now things seem to be running fine. While I was at it, I stuck in an extra 256 megs of Crucial PC2100... gotta love the current RAM market.

By the way, does anyone else have a system that takes longer to boot Windows 2000 than an old P-200? For some reason, my system takes forever loading the "amdagp.sys" driver...

-Will