Stuck on loader.conf

[Wojciech Puchar]

> As a newbie on freebsd I eagerly played this featureful OS, now my last one
> being the serial console, sure enough my two fsbd box can connect to each
> other console via com port/null-modem connection, unfortunately as I had
> already finished I revert but the old entry on  /etc/ttys but forgot to take
> out the console=comconsole on /boot/loader.conf.
> As of of now I had lost connection via com port and worst stuck on boot at
> loader.conf  section.

1) connect the console back, boot single user and fix loader.conf
2) boot from install/live cd, mount root partition and fix loader.conf