I don't think Windows XP is reporting my IDE drives' UDMA modes correctly

[ryan]

I have three IDE devices connected to my motherboard. My
motherboard is running the VIA 82C596B chipset and
supports up to UDMA 66. I am using 80 conductor, 40 pin
ATA-100 compliant cables.

My hard disk is being recognized by the BIOS as UDMA66.
My DVD-ROM and CD-RW drives are being recognized by the
BIOS as UDMA33.

The problem is I don't think Windows XP Pro is
recognizing these drives' UDMA modes correctly. XP is
showing my HDD as Ultra DMA mode 3 and both CD-drives as
Ultra DMA mode 1. From what I understan, UDMA mode 3 is
33mb/s and UDMA mode 1 is even less. Am I correct in
this? If so, I have tried numerous things in windows as
well as downloading the latest drivers and BIOS updates;
none which have had any effect. Any help??? Please???

[Kev]

I checked the MS Knowledge Base and found this:

http://support.microsoft.com/search/default.aspx?Catalog=LCID%3D1033%26CDID%
3DEN-US-KB%26PRODLISTSRC%3DON&withinResults=&QuerySource=gASr_Query&Product=
winxp&Queryc=Ultra+DMA+mode&Query=Ultra+DMA+mode&KeywordType=PHRASE&maxResul
ts=25&Titles=false&numDays=

(You may have to copy and paste the URL).

The fix is actually pretty simple. Hope this helps......

Kev

"ryan" > wrote in message
...
> I have three IDE devices connected to my motherboard. My
> motherboard is running the VIA 82C596B chipset and
> supports up to UDMA 66. I am using 80 conductor, 40 pin
> ATA-100 compliant cables.
>
> My hard disk is being recognized by the BIOS as UDMA66.
> My DVD-ROM and CD-RW drives are being recognized by the
> BIOS as UDMA33.
>
> The problem is I don't think Windows XP Pro is
> recognizing these drives' UDMA modes correctly. XP is
> showing my HDD as Ultra DMA mode 3 and both CD-drives as
> Ultra DMA mode 1. From what I understan, UDMA mode 3 is
> 33mb/s and UDMA mode 1 is even less. Am I correct in
> this? If so, I have tried numerous things in windows as
> well as downloading the latest drivers and BIOS updates;
> none which have had any effect. Any help??? Please???

[Kev]

Sorry - I gave you the search results url - here is the correct one:

http://support.microsoft.com/default.aspx?scid=kb;en-us;327805

Kev

"ryan" > wrote in message
...
> I have three IDE devices connected to my motherboard. My
> motherboard is running the VIA 82C596B chipset and
> supports up to UDMA 66. I am using 80 conductor, 40 pin
> ATA-100 compliant cables.
>
> My hard disk is being recognized by the BIOS as UDMA66.
> My DVD-ROM and CD-RW drives are being recognized by the
> BIOS as UDMA33.
>
> The problem is I don't think Windows XP Pro is
> recognizing these drives' UDMA modes correctly. XP is
> showing my HDD as Ultra DMA mode 3 and both CD-drives as
> Ultra DMA mode 1. From what I understan, UDMA mode 3 is
> 33mb/s and UDMA mode 1 is even less. Am I correct in
> this? If so, I have tried numerous things in windows as
> well as downloading the latest drivers and BIOS updates;
> none which have had any effect. Any help??? Please???

[Yves Leclerc]

To allow the higher UDMA speeds, you would need to install the chipset
drivers. Since you have a VIA chipset, you may need to download the latest
VIA 4 in 1 Hyperion drivers.

Yves

"ryan" > wrote in message
...
> I have three IDE devices connected to my motherboard. My
> motherboard is running the VIA 82C596B chipset and
> supports up to UDMA 66. I am using 80 conductor, 40 pin
> ATA-100 compliant cables.
>
> My hard disk is being recognized by the BIOS as UDMA66.
> My DVD-ROM and CD-RW drives are being recognized by the
> BIOS as UDMA33.
>
> The problem is I don't think Windows XP Pro is
> recognizing these drives' UDMA modes correctly. XP is
> showing my HDD as Ultra DMA mode 3 and both CD-drives as
> Ultra DMA mode 1. From what I understan, UDMA mode 3 is
> 33mb/s and UDMA mode 1 is even less. Am I correct in
> this? If so, I have tried numerous things in windows as
> well as downloading the latest drivers and BIOS updates;
> none which have had any effect. Any help??? Please???