John Baldwin wrote:
>
> /boot/loader.conf perhaps, but how does the loader know that the previous boot
> failed so that it knows to fall back? This is much harder, as a failed kernel
> boot usually results in a hang or an instant CPU reset.
Loader sets a flag before booting, and the boot process resets it at the
end. Of course, loader doesn't have write capability.
--
Daniel C. Sobral (8-DCS)
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