Enhancing cdboot [patch for review]

[Giorgos Keramidas]

On Thu, 11 Dec 2008 10:52:49 +0200, Jonathan McKeown <jonathan at hst.org.za> wrote:
>> cdboot runs long after the prompt for BIOS setup.  I don't think we
>> can modify cdboot to add serial console support to systems whose BIOS
>> setup doesn't support it.
>
> Sorry, of course you're right: I'm talking nonsense.
>
> It's the stage immediately after that that isn't available. I wish I
> could remember why I thought that had caused me a problem once.
>
> Certainly there's a big chunk of the boot process that is accessible
> through a serial console on a disk-based boot that's not available on
> a serial-console boot.

I'm still not sure what sort of `serial console boot' we are talking
about here.  What's the difference between a `serial console on a
disk-based boot' and a `serial console boot'?