UDMA 6 not recognized in Windows XP Home Edition

[Robert]

Hi!

I am running Windows XP Home Edition with SP1.

Although my BIOS is set to UDMA 6 and my HD has full support for it,
the
current Windows XP UDMA mode remains UDMA 5.

I have tried reinstalling the driver from the Windows XP install CD-ROM
to no avail.

The version of my current ATA driver is 5.1.2600.1106.

Would anyone know if and where a newer driver is available?

Or a fix for this glitch?

Thank you very much for any answer.

Cheers,
Robert

[Danny Bleu]

Does you M/B support it?

<Robert> wrote in message ...

Hi!

I am running Windows XP Home Edition with SP1.

Although my BIOS is set to UDMA 6 and my HD has full support for it,
the
current Windows XP UDMA mode remains UDMA 5.

I have tried reinstalling the driver from the Windows XP install CD-ROM
to no avail.

The version of my current ATA driver is 5.1.2600.1106.

Would anyone know if and where a newer driver is available?

Or a fix for this glitch?

Thank you very much for any answer.

Cheers,
Robert

[Robert]

On 16/09/2003 Danny Bleu wrote:

> Does you M/B support it?
>
> <Robert> wrote in message
> ...
>
> Hi!
>
> I am running Windows XP Home Edition with SP1.
>
> Although my BIOS is set to UDMA 6 and my HD has full support for it,
> the
> current Windows XP UDMA mode remains UDMA 5.
>
> I have tried reinstalling the driver from the Windows XP install
> CD-ROM to no avail.
>
> The version of my current ATA driver is 5.1.2600.1106.
>
> Would anyone know if and where a newer driver is available?
>
> Or a fix for this glitch?
>
> Thank you very much for any answer.
>
> Cheers,
> Robert
_______________

Yes it does (ASUS P4P800 Deluxe).

--
Cheers,
Robert

[BigJIm]

is your drive ata 133?

<Robert> wrote in message ...
>
> Hi!
>
> I am running Windows XP Home Edition with SP1.
>
> Although my BIOS is set to UDMA 6 and my HD has full support for it,
> the
> current Windows XP UDMA mode remains UDMA 5.
>
> I have tried reinstalling the driver from the Windows XP install CD-ROM
> to no avail.
>
> The version of my current ATA driver is 5.1.2600.1106.
>
> Would anyone know if and where a newer driver is available?
>
> Or a fix for this glitch?
>
> Thank you very much for any answer.
>
> Cheers,
> Robert

[Jef Norton]

<Robert> wrote in message ...
|
| Hi!
|
| I am running Windows XP Home Edition with SP1.
|
| Although my BIOS is set to UDMA 6 and my HD has full support for it,
| the
| current Windows XP UDMA mode remains UDMA 5.
|
| I have tried reinstalling the driver from the Windows XP install CD-ROM
| to no avail.
|
| The version of my current ATA driver is 5.1.2600.1106.
|
| Would anyone know if and where a newer driver is available?
|
| Or a fix for this glitch?
|
| Thank you very much for any answer.
|
| Cheers,
| Robert


Hi Robert -

As it detects errors reading and writing information from the drive, Windows
will downgrade the access mode of the drive automatically - from UDMA-6 to
UDMA-5, to UDMA-4, etc., all the way to PIO, as necessary to gain reliable
performance.

To restore UDMA-6 functionality, go into Device Manager and remove the IDE
channel the drive is connected to (IDE ATA/ATAPI Controllers... then Primary
IDE Channel or Secondary IDE Channel... right-click and select Uninstall
from the drop down menu). Then reboot your computer. Upon startup, the
channel will be redetected and it should revert to UDMA-6.

If it doesn't immediately revert to UDMA-6, or if it later drops back down
to UDMA-5 or lower, you may have a problem with the cabling of your
drive(s). IDE cables are quite sensitive to "cross-talk" from other
sources, and, especially with rounded cables, from different wires within
the cable itself. If your IDE cable isn't in the best of shape, replacement
is in order. If the cable is routed very close to other cables, including
power cables for drives, you may try re-routing the cable so that it's
located farther away from other cables. Though I personally would like to
use the rounded IDE cables, I've found them to be problematic with UDMA-6
drives - this is because there should be a ground wire between each of the
signal wires to reduce crosstalk (hence the reason for 80-wire, 40-pin IDE
cables to support UDMA-4 and above -- every other wire is a ground).
Unfortunately when IDE cables are rounded, there's no way to ensure that
there's a ground wire on each side of every signal wire.

In any event, hopefully I've been clear and you are able to resolve your
problem.

Jef