DMA won't stay checked

Hi,

I put a new 80GB WD UDMA-5 hard drive into my old Intel 430TX UDMA-2 chipset
board and am running Windows 98SE. The DMA checkbox (in Device Manager) in
98SE won't stay checked on this new drive. The DMA checkbox does remain
checked on my CD-RW, and the other old 3GB drive.

I can't find a utility from Western Digital to change UDMA-5 to UDMA-2 that
will actually work. Maybe there new drives don't support this old
compatibility issue?

The only way I get DMA to stay checked on this drive is to turn off UDMA in
BIOS, but then I get PIO-4 transfers (16.6MB/sec max)

Isn't there some way to make this work in my old computer?

Is there some way to program the registry to force UDMA transfers on disks
in 98SE?

Any OTHER solutions?

Thanks

Force - like in slege hammer?

"Jay" wrote in message
...
Hi,

I put a new 80GB WD UDMA-5 hard drive into my old Intel 430TX UDMA-2
chipset
board and am running Windows 98SE. The DMA checkbox (in Device Manager)
in
98SE won't stay checked on this new drive. The DMA checkbox does remain
checked on my CD-RW, and the other old 3GB drive.

I can't find a utility from Western Digital to change UDMA-5 to UDMA-2
that
will actually work. Maybe there new drives don't support this old
compatibility issue?

The only way I get DMA to stay checked on this drive is to turn off UDMA
in
BIOS, but then I get PIO-4 transfers (16.6MB/sec max)

Isn't there some way to make this work in my old computer?

Is there some way to program the registry to force UDMA transfers on disks
in 98SE?

Any OTHER solutions?

Thanks

Jay,

Restart in Safe Mode, enter Control Panel -- System -- Device Manager,
and delete all non-existent HDDs and CDROMs there. Delete also all the
duplicates of the drives were they be found (delete non only the false
duplicate device then -- but the whole pairs of the duplicates).

After restart Windows will re-detect the drives, and most likely you'll
be able to set the UDMA mark.

Besides that, I think there would be better to limit UDMA mode of HDD in
your case -- as you supposed already. There was the utility "Dlgudma"
(Data Lifeguard Ultra ATA Management) at WD site, but it is removed from
there now. It can be found in the Internet still -- but the latest
version I saw dated Year 2000, while I have version 10, dated Year 2002.

--
Mikhail Zhilin
http://www.aha.ru/~mwz
Sorry, no technical support by e-mail.
Please reply to the newsgroups only.
======
On Tue, 8 Mar 2005 14:46:30 -0500, "Jay" wrote:

Hi,

I put a new 80GB WD UDMA-5 hard drive into my old Intel 430TX UDMA-2 chipset
board and am running Windows 98SE. The DMA checkbox (in Device Manager) in
98SE won't stay checked on this new drive. The DMA checkbox does remain
checked on my CD-RW, and the other old 3GB drive.

I can't find a utility from Western Digital to change UDMA-5 to UDMA-2 that
will actually work. Maybe there new drives don't support this old
compatibility issue?

The only way I get DMA to stay checked on this drive is to turn off UDMA in
BIOS, but then I get PIO-4 transfers (16.6MB/sec max)

Isn't there some way to make this work in my old computer?

Is there some way to program the registry to force UDMA transfers on disks
in 98SE?

Any OTHER solutions?

Thanks

On Tue, 8 Mar 2005 14:46:30 -0500, "Jay" wrote:

Hi,

I put a new 80GB WD UDMA-5 hard drive into my old Intel 430TX UDMA-2 chipset
board and am running Windows 98SE. The DMA checkbox (in Device Manager) in
98SE won't stay checked on this new drive. The DMA checkbox does remain
checked on my CD-RW, and the other old 3GB drive.

I can't find a utility from Western Digital to change UDMA-5 to UDMA-2 that
will actually work. Maybe there new drives don't support this old
compatibility issue?

You are probably right here. WD doesn't have a 33.8GB limit jumper
either.

The only way I get DMA to stay checked on this drive is to turn off UDMA in
BIOS, but then I get PIO-4 transfers (16.6MB/sec max)

Isn't there some way to make this work in my old computer?

I patched the BIOS in my PC (430TX, Award 4.51) to fix this problem and
the 33.8GB limit. I couldn't find any other way. For the UDMA problem
only a bootstrap patch might suffice. I had such a patch for NTLDR but
you would have to patch IO.SYS.

-- Steven

"Steven" wrote in message
...
On Tue, 8 Mar 2005 14:46:30 -0500, "Jay" wrote:

I patched the BIOS in my PC (430TX, Award 4.51) to fix this problem and
the 33.8GB limit. I couldn't find any other way.


I did this too, forgot to mention it. BIOS patch can handle HDD up to 128GB
now.

On Tue, 8 Mar 2005 19:28:56 -0500, "Jay" wrote:

I patched the BIOS in my PC (430TX, Award 4.51) to fix this problem and
the 33.8GB limit. I couldn't find any other way.


I did this too, forgot to mention it. BIOS patch can handle HDD up to 128GB
now.

If you can do things like patch your BIOS then the UDMA fix is easy.
There is a loop where it checks modes from slow to fast. All you have
to do is set the limit to 3 and it won't go past UDMA-2.

Please ask if you want any more info and I will try to find my notes.

-- Steven

"Jay" wrote in message
...
Hi,

I put a new 80GB WD UDMA-5 hard drive into my old Intel 430TX UDMA-2
chipset board and am running Windows 98SE. The DMA checkbox (in Device
Manager) in 98SE won't stay checked on this new drive. The DMA checkbox
does remain checked on my CD-RW, and the other old 3GB drive.


Yep, Western Digital DMA utility that changes ATA mode
will solve your problem. You can download it at
http://www.autourdupc.com/index.php?...Utils/Disk.htm

Good luck,
Roman


I can't find a utility from Western Digital to change UDMA-5 to UDMA-2
that will actually work. Maybe there new drives don't support this old
compatibility issue?

The only way I get DMA to stay checked on this drive is to turn off UDMA
in BIOS, but then I get PIO-4 transfers (16.6MB/sec max)

Isn't there some way to make this work in my old computer?

Is there some way to program the registry to force UDMA transfers on disks
in 98SE?

Any OTHER solutions?

Thanks

"roman modic" wrote in message
...


Yep, Western Digital DMA utility that changes ATA mode
will solve your problem. You can download it at
http://www.autourdupc.com/index.php?...Utils/Disk.htm

Good luck,
Roman

I downloaded and tried that utility. It uses a DOS-extender and when I run
it, I get an error report. I tried running it from a vanilla W98 safe mode
prompt, and it still won't function. Anybody understand this? See attached
report.

Hm ...

Try this:
Download "Data Lifeguard Diagnostic for DOS (Floppy)"
from wdc support and create boot floopy.
Restart PC and boot from that floopy and then try
to start dlgudma...

Roman

"Jay" wrote in message
...

"roman modic" wrote in message
...


Yep, Western Digital DMA utility that changes ATA mode
will solve your problem. You can download it at
http://www.autourdupc.com/index.php?...Utils/Disk.htm

Good luck,
Roman

I downloaded and tried that utility. It uses a DOS-extender and when I
run
it, I get an error report. I tried running it from a vanilla W98 safe
mode
prompt, and it still won't function. Anybody understand this? See
attached
report.

Another solution could be "Ultimate Boot CD"

http://ubcd.sourceforge.net/

Roman




"Jay" wrote in message
...

"roman modic" wrote in message
...


Yep, Western Digital DMA utility that changes ATA mode
will solve your problem. You can download it at
http://www.autourdupc.com/index.php?...Utils/Disk.htm

Good luck,
Roman

I downloaded and tried that utility. It uses a DOS-extender and when I
run
it, I get an error report. I tried running it from a vanilla W98 safe
mode
prompt, and it still won't function. Anybody understand this? See
attached
report.