George wrote:
> In article <470aed52$0$24344$>,
> lid says...
>
>> I'm aware of the fact that ACPI and APIC are two
>> different things and would not normally be listed
>> together, as you say. I just thought that info on what
>> APIC is would be helpful to the OP as well as the info
>> you provided regarding ACPI, but in a more compact form.
>> ;-)
>
>> On my nForce2 NF-7 MB system, APIC is disabled as well
>> (ACPI enabled to allow power options), as I had few
>> devices to worry about sharing IRQs, and in some cases
>> caused problems with audio if enabled.
>
>> On my new system (P5B-Plus, E6600), with many more
>> devices and an Intel chipset, APIC is enabled (along
>> with ACPI, of course) with no dire consequences. :-)
>
> I appreciate everybody's suggestions on this problem.
>
> It seems pretty clear to me that the failure of XP to
> install (but not Linux or 98SE) with APIC support enabled
> means that there is almost certainly something wrong with
> the motherboard. XP sets up its hardware tables based on
> the motherboard showing APIC being enabled, but then when
> the install process reboots to the hard drive for the first
> time, with APIC now actually being used by XP, it doesn't
> work, and the system hangs. But if I install XP with APIC
> turned off in the first place, XP knows that, and doesn't
> try to use it, and everything works fine.
>
> I've found a reference somewhere on the net when reading
> about this to the effect that APIC is required for
> multiprocessors. But it's not clear whether that includes
> multi-core single-chip processsors. It's clear that at
> least one core of the Pentium D works with APIC support
> disabled, but I wouldn't want the other core to be unusable
> as a result. Anybody know about that, or know of a program
> that will show whether both cores are actually working?
Interesting thing as I checked my P5B-Plus manual to see what is
mentioned about APIC and ACPI. Just as you have it listed, I do too:
ACPI 2.0 support (enable/disable)
ACPI APIC support (enable/disable)
When I built this system from scratch, I had both enabled and had no
install problems, or any other kind. I have a dual core CPU (E6600) and
both cores are being used. The way I can tell is watching the core
temperatures as the system does something like transcoding video. I
agree that enabling APIC should not cause install problems. It could be
the MB, but it may be a resource conflict.
What did catch my eye as I reread your original post, is that you're
installing XP SP1. That may be the problem right there. SP2 has been
out long enough now, that lots of people and companies assume you are
running SP2.
What you need to do is create a CD that has SP2 slipstreamed in. How
it's done, I don't know, but I'm sure someone has had to do it and may
be able to help. I have XP Home SP2 and after the install, there were
80+ more updates, so SP1 is really considered very old.
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