Problem enabling UDMA in Windows XP!

[PCPETE]

Hey, I have had quite the time trying to enable UDMA in Windows XP Professional. First off, I have three drives installed in my computer. On the Primary channel, I have an IBM Deskstar 60GXP 40gigbyte ata 100 as the master and an older 44X CD Rom drive as the slave. On the Secondary channel, I have an Iomega 12 X 10 X 32 Drive as a solo master. The IBM drive operates at 7200rpms with a 2mb cache and 8.5ms time. Also, for the Primary Channel I have a Vantac 80 pin ATA 100/133 cable.

So, everything should be within the specs! In Windows I have "DMA if availible" option for both channels. In my KT3 Ultra 2's bios, I have AUTO specified so it will by default it will have the highest speed! So why is this all messed up? Is the old CD rom holding back the IBM Deskstar?

 

[PCPETE]

well, I just made The IBM Deskstar the only drive on the Primary channel and put both the CD drives on the second channel respectivly. Now, the only drive in DMA is the Iomega at DMA 33. I will have to mess around with the bios.

 

[PCPETE]

Sorry to keep doing these little replies, but I have to fix this! I changed the Drive to USER Defined settings in AMI Bios on my KT3 Ultra and selected I/O mode 5 (for ATA 100) but still have had no luck. Could my cable by messed up even though the drive is fully functional?

 

[tomcas1]

Maybe you got more than six errors in which case xp ( or 2000) will automatically turn off DMA.
http://www.microsoft.com/hwdev/tech/storage/IDE-DMA.asp
You can manually edit your registry to overide this.
http://www.gmayor.dsl.pipex.com/cd_writer_udma_mode.htm
If this is your problem it's probably a good idea to try and find the source of the errors.

 

[PCPETE]

thats some nice info! I thought I saw something like this, lemme check it out! good, a place to start.

 

[PCPETE]

no use. I found the window 2000 thing interesting and tried to do it on Windows XP, but no use. Anyone else try to get past this?

 

[microAmp]

In the Device Manger uninstall the IDE Controllers, reboot and see what happens.

 

[PCPETE]

Originally posted by: motoamd
In the Device Manger uninstall the IDE Controllers, reboot and see what happens.

didn't think of that! I will try it, thanks

 

[PCPETE]

well, I was messed up with my original jumpers. I didn't have cable select going on the ATA 100 wire. So now, I have the ATA100 ibm and a small old WD 4gb on slave with the cable. But I still dont have UDMA 100 on the IBM. whats up here? I have tried doing user settings in the mobo and only enabling udma 100 and still no luck! and via 4 in 1 was reinstalled.

whats up with Win XP Pro? im getting angy and im gunna install Mandrake tomarrow! But I still want to fix Windows XP in ATA 100 mode.

 

[PCPETE]

anyone have any ideas? I thinks its now on the software end of the problem. I have made sure time and time everything is connected fine. I don't know whats up! Its now cable select and I try all the tricks described in windows and my IBM is stuck in pio mode. I tell you, everything is compatible with ata 100. Do round cables ever get screwed up so they still function but you have to get a new one? Because, I'm using a Vantec round cable with ata 100/133 support. Is my old WD harddrive as a slave messing up the IBM's UDMA 100 mode?

 

[VictorLazlo]

You've got to try a different cable. Also, make sure the cable is used in the correct direction (blue connector to the mobo, black to the master, grey to the slave, etc.) Apparently, it makes a difference.

Do a search on www.tweakxp.com and www.ntcompatible.com I go there when searching microsoft and google doesn't turn up answers.

Take a step back. Try another harddrive with this mobo. Then try this harddrive with another mobo. You need to do this to determine if the problem lies with the mobo, the cable, or the drive. Once you know who the culprit is, go from there.

 

[tomcas1]

It's possible that your old WD ( if its pio 0 ) could drag your IBM down from UDMA.
http://www.pcguide.com/ref/hdd/if/ide/conf_Cable80.htm

 

[vietofmars]

Get latest via 4 in 1's www.viaarena.com

set to pio mode in xp, click ok, close the window.
go back in set to dma if available, click ok, close the window.

I had to do that a couple times and it stuck, different mobo tho, some HP computer.

http://www.microsoft.com/whdc/hwdev/tech/storage/IDE-DMA.mspx

To enable DMA mode using the Device Manager

1. Open Device Manager.

2. Double-click IDE ATA/ATAPI Controllers to display the list of controllers and channels.

3. Right-click the icon for the channel to which the device is connected, select Properties, and then click the Advanced Settings tab.

4. In the Current Transfer Mode drop-down box, select DMA if Available if the current setting is "PIO Only."
If the drop-down box already shows "DMA if Available" but the current transfer mode is PIO, then the user must toggle the settings. That is:
? Change the selection from "DMA if available" to PIO only, and click OK.
? Then repeat the steps above to change the selection to DMA if Available.