Can't find the right registry keys to alter to keep my drives in DMA

[Bix]

So I had been using this to keep me from switching to PIO, and it worked great: http://neodon.blogspot.com/2006/07/little-...hard-drive.html

Then I had a nasty power surge and had to get a new MoBo, do a clean install of XP, etc. Generally things have been okay, but I can't find the indicated registry keys...are there alternate ones I should be aware of?

Thanks!

[Capmaster]

I don't understand - why are you switching to PIO at all?

If the HD is installed correctly, your IDE or SATA controller will automatically set the transfer mode.

More info, please

[Bix]

Read the link - there's a flaw in XP that will default drives to PIO at certain times. It has nothing to do w/ how the HDs are installed (which is fine).

This site has a registry edit which keeps the switch to PIO from happening. Problem is...in my new install of XP, the keys I need to edit aren't there.

[Capmaster]

Read the link - there's a flaw in XP that will default drives to PIO at certain times. It has nothing to do w/ how the HDs are installed (which is fine).

This site has a registry edit which keeps the switch to PIO from happening. Problem is...in my new install of XP, the keys I need to edit aren't there.

You can always create them in Regedit using New>DWORD>"Name", then modify by right-clicking.

[Xylob the Destroyer]

I couldn't find the keys where his guide says they are, but I did find them.
In RegEdit, hit cTRL+F and search for "primary ide" -- it should take you right where you need to be.
On my machine (Win2K) the keys he talks about are located under: HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Cl ass\{4D36E96A-E325-11CE-BFC1-08002BE10318}\0001

but if you aren't comfortable dicking around in your registry, I wouldn't mess with it.
also, check your BIOS settings and make sure that both your mobo and all drives are compatible with Ultra DMA 6

[Bix]

I couldn't find the keys where his guide says they are, but I did find them.
In RegEdit, hit cTRL+F and search for "primary ide" -- it should take you right where you need to be.
On my machine (Win2K) the keys he talks about are located under: HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Cl ass\{4D36E96A-E325-11CE-BFC1-08002BE10318}\0001

but if you aren't comfortable dicking around in your registry, I wouldn't mess with it.
also, check your BIOS settings and make sure that both your mobo and all drives are compatible with Ultra DMA 6

That worked swimmingly, thanks!