Re: Can you disable SMP in the kernel by appending the kernel line in GRUB

[Jeff D <fixedored@gmail.com>]

On Mon, 20 Aug 2007, Nigel Henry wrote:

> I've been trying to help someone on the list with acpi related shutdown
> problems, with no success up to now.
>
> When I had shutdown problems with FC5 (fixed with using acpi=force), someone
> on the Fedora list suggested that it could be a problem with SMP kernels.
>
> I Googled a bit the other day, and found stuff about recompiling the kernel,
> and disabling SMP in it, but is there a way to disable SMP by appending the
> kernel line in GRUB?
>
> I read one comment that said:
> To disable SMP at bootup, use,
> noreplace-smp
>
> Is that an appendment to the kernel line or what? I don't want to suggest
> something stupid for Mark to try.
>
> Any comments, suggestions welcome.
>
> Nigel.

Yes, you would want to append that to the kernel line in 
/boot/grub/menu.lst .  You may also want to try nosmp or maxcpus=0 , both 
of those will disable the smp code.

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