From owner-freebsd-amd64@FreeBSD.ORG  Thu Jan 20 16:12:05 2005
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Date: Thu, 20 Jan 2005 10:12:04 -0600
From: Scot Hetzel <swhetzel@gmail.com>
To: freebsd-stable@freebsd.org, freebsd-amd64@freebsd.org
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Subject: Re: Failure on today's CVS (stable, AMD)
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On Wed, 19 Jan 2005 16:42:29 -0500, Michael R. Wayne
<freebsd@wayne47.com> wrote:
> 2) More importantly, I recovered by loading /boot/kernel.old/kernel
>   and the box is up BUT I am concerned that the NEXT time that I
>   do "make installkernel" I'll stomp on kernel.old losing this fallback
>   procedure.  I can certainly copy /boot/kernel.old to /boot/kernel.save
>   but is there something else I should save?  Or is there another
>   suggested procedure?
> 
When I have a bad kernel I do the following after booting the good kernel.

cd /boot
rm -rf kernel
cp -rp kernel.old kernel
cp -rp kernel.old kernel.good

This way I can reboot the box without going into the loader to load kernel.old.

Scot