PIO to UDMA Quick Fix

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PIO to UDMA Quick Fix

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Rushman1

Junior Member

3. November 2005 @ 13:40

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I know I am posting at the wrong place, but I dont have time to find the right list tonight.(got to go back to work) Please some Mod. just move it for me. I feel like this info is very important to some and worth the trouble.

I have read many threads on this problem here. I have struggled with it myself. After some arrors XP set mine to PIO. I did all the normal stuff with no good results. In bios I could tell there was a problem but there was no place to change it.

Fix: I powered down and then unpluged the computer. Nexted I popped out the battery on the mother board for the CMOS chip. This reset everything in bios. I had to reset the clock and answer some promps. Fixed me right up and I am back burning in UDMA.Very Simple !!!
If I had now done this my next step was to format C :(

Hope this helps
Thanks
Rushman.

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bunnyrip

Senior Member

3 product reviews

3. November 2005 @ 13:52

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@Rushman1, this is a good tip, however with Windows XP there is an easier way to re-set your drive to DMA. Go to the device manager,find your IDE controller, secondary channel (If that's the one your drive is on that's PIO)Remove the driver, re-boot, you're done! It will be back to DMA! You won't even have go inside your case at all. Try it. By the way, this fix comes from Microsoft themselves.Next time read errors occur that cause your drive to downgrade to PIO, try this fix. It works very well & is easy.

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Rushman1

Junior Member

3. November 2005 @ 14:23

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Thanks...but I did all that and it would not work. My method is just a last ditch effort when all else fails...late to work got to go..

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larrylje

AfterDawn Addict

3. November 2005 @ 20:00

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I agree with bunny uninstall it but there should be no reason to pop out your battery. Your motherboard should have a jumper on it to reset the bios. just throwing my 2 cents in this thread. but again the easiest way is to uninstall the IDEchannels.

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Rushman1

Junior Member

4. November 2005 @ 00:05

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I know about the jumper...it was easier to pop out the battery (in my case). Also, you guys are not reading my post. Uninstalling was the first thing I did. JUST RESET THE BIOS WHEN NOTHING ELSE WORKS. This method is a last ditch effort when nothing else works. I have read many post from people uninstalling and it not working. I am just trying to help people who have done all the things you are saying and still dont have it back to UDMA.

Thanks

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pulsar

AfterDawn Addict

4. November 2005 @ 02:03

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Have you looked in the BIOS yet? Under IDE peripherals you have to enable DMA block access & another DMA function.

If I am not mistaken, when you reset the BIOS to default it turns off the DMA bits & bobs in IDE peripherals.

Give it a whirl & see what you find.....

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Gif by Phantom69

This message has been edited since posting. Last time this message was edited on 4. November 2005 @ 02:08

Rushman1

Junior Member

4. November 2005 @ 03:32

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People, please re- read my post. I did all that stuff and it did not work. After I reset the Bios it came up and worked perfect. All I had to do was reset the clock...after the reset. Sorry I brought this up :( This was just for a last ditch effort when all else fail. I clearly know all the short cuts in getting from PIO to UDMA. After all I have 5 computers and have had these problems before. This was the first time the standard and very much preferred method would not work and I had to reset. I have read where the standard did not work for other people as well. This is just to help them. Hint..write down what all your bios

Thanks
Rushman

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creaky

Moderator

4. November 2005 @ 03:38

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in support of the reset bios theory (ie not just for DMA issues) over the years i've had to do the reset Bios thing the odd time; though not for some years; i used to get screwy behaviour from the odd PC and a bios reset to defaults worked wonders - good job as it usually saved having to reformat. i imagine it's not a common problem on newer machines though.

Rushman1 is stating this fix as a last resort, if a reinstall looks like the only cure - a bios reset is worth doing AS LONG AS you know what previous settings were

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This message has been edited since posting. Last time this message was edited on 4. November 2005 @ 03:39

ireland

AfterDawn Addict

4. November 2005 @ 04:56

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Enabling Direct Memory Access or "DMA" for faster DVD copying

Checking and setting the DMA settings is an important part of configuring PC for recording DVDs.

From Microsoft:
"Basically, DMA or Direct Memory Access is a system that allows devices in your computer to transfer data directly to and from RAM without having to use the CPU as an intermediary. This boosts the performance of your PC significantly as not only the device from which the data is being read responds quickly, but also leaves the most important component, the CPU, free for other critical operations. However, the UDMA or the Ultra direct memory access is further advancement over the DMA technology that uses even higher data transfer rate thereby boosting the overall performance of the PC.

For repeated DMA errors. Windows XP will turn off DMA mode for a device after encountering certain errors during data transfer operations. If more that six DMA transfer timeouts occur, Windows will turn off DMA and use only PIO mode on that device.

In this case, the user cannot turn on DMA for this device. The only option for the user who wants to enable DMA mode is to uninstall and reinstall the device.

Windows XP downgrades the Ultra DMA transfer mode after receiving more than six CRC errors. Whenever possible, the operating system will step down one UDMA mode at a time (from UDMA mode 4 to UDMA mode 3, and so on).

If the mini-IDE driver for the device does not support stepping down transfer modes, or if the device is running UDMA mode 0, Windows XP will step down to PIO mode after encountering six or more CRC errors. In this case, a system reboot should restore the original DMA mode settings.

All CRC and timeout errors are logged in the system event log. These types of errors could be caused by improper mounting or improper cabling (for example, 40-pin instead of 80-pin cable). Or such errors could indicate imminent hardware failure, for example, in a hard drive or chipset.

Let's take a look at enabling DMA in a computer using Windows XP.

A VERY GOOD GUIDE WITH PICTURES

go here and read the rest
http://www.dvdplusvideo.com/dvdguide005.html

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Rushman1

Junior Member

4. November 2005 @ 05:56

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Creaky..it was an older 2400 Dell Deminsion. Thanks

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