Good conclusion ... same answer I found here:
 http://kbase.redhat.com/faq/FAQ_42_10986.shtm
> -----Original Message-----
> From: Geert Janssens [mailto:info@xxxxxxxxxxxx]
> Sent: Wednesday, September 05, 2007 2:54 AM
> To: xen-users@xxxxxxxxxxxxxxxxxxx
> Subject: Re: [Xen-users] Re: Setup WinXP with HVM and qemu image
>
>
> A very late follow-up on this old thread of mine (about a 
> qemu-created WinXP 
> setup that won't boot in Xen HVM) for those who might get 
> stuck in a similar 
> situation.
>
> Because I couldn't get it to work properly in Xen, I returned 
> to qemu and 
> continued to work with Qemu. After a few issues there, I 
> finally discovered 
> that my WinXP installation (and my qemu configuration) both 
> were setup using 
> acpi. I disabled acpi in WinXP and qemu, and my problems went away.
>
> I didn't have time yet to try the same thing in xen, but I'm 
> pretty sure this 
> acpi thing was causing the original failure.
>
>
> To all that offered advice and suggestions: thanks and sorry 
> for the wrong 
> starting information.
>
> Regards,
>
> Geert
>
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