checking for bad media

[justin at shiningsilence.com]

> modem cables to try a serial install, but all the forknibbler docs
> (which I need) are unavailable atm, even by google cache...

http://leaf.dragonflybsd.org/~justin/ - for now.

forknibbler.com may be retired permanently, just because I have a
different network layout, and can put that data elsewhere.  I'm still
getting sorted out, though I'm closer.