att: Tom G how can i change it???

[-]

its doesnt say dma 5 or 6 it says multiword dma 2..
regards
Tommy

"Ultra DMA Mode 5???? how can i change it?
please help
Tommy

 

[Skid]

"-" wrote:

its doesnt say dma 5 or 6 it says multiword dma 2..
regards
Tommy

"Ultra DMA Mode 5???? how can i change it?
please help
Tommy

First of all, what kind of drive is it and what mode is it supposed to use?

Assuming it really is UDMA 5, you could start by deleting the IDE controller in Device Manager. Sounds drastic, but Windows will redetect it on reboot and may corectly identify the drive the second time around.

If not, there is a problem either with the cables or in the motherboard's bios. Try a new or different cable, and try changing the jumper on the drive itself to "cable select" if you have that option. Go into the bios and force the controller to redetect the drives -- your owner's manual should tell you how.

 

[patrickp]

"Skid" wrote:

"-" wrote:

its doesnt say dma 5 or 6 it says multiword dma 2..
regards
Tommy

"Ultra DMA Mode 5???? how can i change it?
please help
Tommy

First of all, what kind of drive is it and what mode is it supposed to

use?

Assuming it really is UDMA 5, you could start by deleting the IDE controller in Device Manager. Sounds drastic, but Windows will redetect it on reboot and may corectly identify the drive the second time around.

If not, there is a problem either with the cables or in the motherboard's bios. Try a new or different cable, and try changing the jumper on the drive itself to "cable select" if you have that option. Go into the bios and force the controller to redetect the drives -- your owner's manual should tell you how.

When updating IDE controllers, it's always a good idea to boot in safe mode (there's a Show All mode in XP?) and Remove all drives - hard drives and optical drives - to ensure that they're detected and run by the controller when they're re-installed, as Skid says.

If you've never done this before, but have updated your IDE controller, you may find multiple instances of your drives that don't show in normal mode. Just Remove the lot. They'll re-install correctly on reboot, and that ensures that the IDE controller recognises them, and that you don't have invisible non-working devices on your system. That can affect the way your system runs.

patrickp

 

[TomG]

if the device that is connected to the controller supports it, you just set the controller for DMA If Available and then it will go as high as the device connected to is supports as long as the OS does not detect errors on the device during data transfers. if data transfer errors are occurring, then the OS will downshift, as far as necessary, the transfer mode all the way back to PIO is needed, to try to correct the parity or other transfer errors.

 

[Skid]

"TomG" wrote:

if the device that is connected to the controller supports it, you just set the controller for DMA If Available and then it will go as high as the device connected to is supports as long as the OS does not detect errors on the device during data transfers. if data transfer errors are occurring, then the OS will downshift, as far as necessary, the transfer mode all the way back to PIO is needed, to try to correct the parity or other transfer errors.

Once Windows XP reports six errors with DMA enabled, it will disable it and won't let you turn it back on. I had this happen to me when I had a problem cable on a CD burner.

Replacing the cable wasn't enough to fix it, the only way I could get DMA enabled again was to delete the controller and let it redetect -- which cleared the error log and gave me a fresh start.

 

[TomG]

interesting. I had a slightly different experience with a system that kept starting out with the controller in UDMA Mode 5 at boot time but the computer would get slower and slower and mouse pauses and such and if you looked, within an hour of boot, the mode would be as low as PIO.

That was traced to a bad cable and when the cable was replaced, I was able to set UDMA If Available and the controller went with it.

I have also had systems where you could not adjust the controller as you describe and I was forced to delete the IDE controller and allow it to be redetected to be able to make the setting. I really should have included the tip about deleting and re-detecting the IDE controller as well.