Enable UDMA Mode on Intel Chipsets

[357mag]

Someone told me a while ago that one thing I could do is to go into Device Manager and click on Primary IDE Interface and Secondary IDE Interface and look to see if "Use DMA if available" is checked. Currently mine is set to PIO. I guess if you check DMA you will see better disk performance.

But I've been doing some research on the web about tweaking Windows 2000 and there is a similar tweak you can do called Enabling UDMA66. Supposedly if you have a computer with an Intel chipset that supports UDMA66 you can enable it by going into the Registry and editing it. Has anyone here heard of this? I know my motherboard is an Intel D865PERL but how would I find out what the chipset is?

[Cricket]

Originally Posted by 357mag Someone told me a while ago that one thing I could do is to go into Device Manager and click on Primary IDE Interface and Secondary IDE Interface and look to see if "Use DMA if available" is checked. Currently mine is set to PIO. I guess if you check DMA you will see better disk performance.

Did you install the chipset drivers from the motherboard CD?

Originally Posted by 357mag I know my motherboard is an Intel D865PERL but how would I find out what the chipset is?

It uses the 865PE chipset.

Cricket

[357mag]

No I haven't installed the motherboard drivers. Guess I haven't seen a need to since my machine seems to work fine without them. Now I've read that your hard drive should support this UDMA66 as well. So I sent an email to Western Digital. Maybe they will get back to me on it. I know my hard drive is pretty new. But getting back to this UDMA66 stuff has anyone here performed that tweak?

Are you suggesting that I install the motherboard drivers from my CD? Why should I do that if everything appears to function fine without them?

[pam123]

Originally Posted by 357mag Are you suggesting that I install the motherboard drivers from my CD? Why should I do that if everything appears to function fine without them?

Actually everything is not functioning fine without them. Everything is not functioning.
XP has generic drivers to get you up and running, which is why you're thinking everything is okay, but as Cricket told you without them you lose the abilities a modern motherboard has.
UDMA is not a tweak it part of the specs for your motherboard that will remain inaccessible to you till you install the drivers.
The same goes for your video, since you don't have the AGP driver either or sound if you're using on board sound and you now have no usb support.
You may have another problem since motherboard drivers are usually the first things installed after you install the OS.
Use Cricket's link to download the latest set of drivers, they're also updated as are all other drivers, and install them.
If all the functions of your motherboard don't come up, you may need to format and reinstall.

[357mag]

I do have my driver installed for my video card. I have no video problems. My motherboard has onboard sound, and I do have the driver installed for that as well. And I do have support for USB 2.0 too. I have all this without the motherboard drivers being installed. My guess is that Windows 2000 must load a set of default drivers that works with most motherboards. However if I need to have the motherboard drivers installed to enable UDMA then I probably will install them.

[glc]

ALWAYS use the Intel Express Installer CD that comes with Intel motherboards and install the recommended drivers. The ones it needs will be checked.