FBSD 8: custom kernel config ends boot at "mountroot>". Plz. help!

[Warren Block]

On Mon, 20 Dec 2010, Frank Shute wrote:

> If you're going to use a custom kernel, copy GENERIC, edit it and save
> it as your kernel conf.
>
> Then when you run into trouble with your custom kernel you can post a
> diff(1) between it and GENERIC. Then it's easy to see what you've
> enabled/disabled, left-out etc.

Another option is to "include GENERIC" in the new config file and use 
nooptions and nodevice to exclude unwanted things.  Then the config file 
is a diff.