dma problems in win xp

[BigJack]

Hi at all.

I have an old acer power se mb V76M p3 700.
I use it to burn principally.
I use nero 6.6 to burn directly from dvd reader to dvd burner on win98se
with Direct Memory Access support...
I have installed win98se/winXP (dual-boot).
I would opt for win xp only because it has all the drivers...


My problem is that I am not able to activate dma in win xp.
There are two possibilities
1)dma if it's available
2)pio

I choose the first but win xp chooses pio always...
Can someone help me?
Can my mb be incompatible.. with win xp?...

[mjc]

The problem is more likely going to be the drives, themselves or the cables...

If the cables are not 80 wire/40 pin IDE cables, there is a very good chance that XP won't all DMA access for the drive(s).

[BigJack]

The problem is more likely going to be the drives, themselves or the cables...

If the cables are not 80 wire/40 pin IDE cables, there is a very good chance that XP won't all DMA access for the drive(s).


I have both udma 66 80 wire/40 pin ide cables and an hard disk udma 66 on this motherboard that supports udma 66.
I was thinking I would have to update my controller PCI IDE SIS or
the bios...

[Whyzman]

Have you read this? http://www.microsoft.com/whdc/device/storage/IDE-DMA.mspx

I remember I had problems with my combo drive with win Me and the solution was finding a set of mini-drivers for the chipset. It may be as mjc pointed out, that the drives themselves are the issue. Or, it could be the drives and drivers. In any case, I suspect that finding an older set of mini-drivers might be quite difficult...unless XP's drivers provide the workaround as sited in the Microsoft article above.

[BigJack]

Thanks, I have read it just now!
I think the problem is another... op.sys.?...

I have installed a diagnostic software in XP and also in ME... that says to me that my dvd players + hard disk are three scsi compatible components on ide atapi channels...


I don't remember this free software... because I have deleted it forever...

[BigJack]

Excuse me, I am in error.
Win xp and win me see scsi devices if there are udma 33 cables.
Infact I had changed these cables...
Now only my hard disk has udma support in win xp.


The speed of the same cd rapid copy in win xp and in win98se is much different.
winxp: around 12 minutes without dma support.
win98se: around 4 minutes with dma support.