Downgrading from HyperThreading (to uniprocessor) in XP Pro

[Lee Rhodes]

Hi,
I've found myself in a situation where I need to disable HyperThreading in
Windows XP Pro in order to get a device working. Instead of re-installing XP
after disabling HT in the BIOS what else do I need to do?

As far as I can make out, I need to copy in the uniprocessor HAL and kernel
components (ntoskrnl.exe ==> ntoskrnl.exe and halacpi.dll ==> hal.dll).

Anything else?

Cheers

 

[V Green]

Hi,
I've found myself in a situation where I need to disable HyperThreading in
Windows XP Pro in order to get a device working. Instead of re-installing XP
after disabling HT in the BIOS what else do I need to do?

As far as I can make out, I need to copy in the uniprocessor HAL and kernel
components (ntoskrnl.exe ==> ntoskrnl.exe and halacpi.dll ==> hal.dll).

Anything else?

Cheers

Actually, you may not need to do anything other
than disable it in the BIOS. XP should work fine
with a multiprocessor HAL even when HT has
been disabled.

Try it, and then try your problem situation as well.

 

[Nathan McNulty]

For me, disabling HT in the BIOS and then booting into XP works just
fine. It actually reconfigures XP as a uniprocessor machine and all
works just the same