>Are there boot blocks for the Shark?  If so, where; and how does one
>install them?

The OFW boot code loads directly from the FFS.  You need to verify
which file it boots on your configuration, but my sharks came with
the standard file to load and run as /boot.  So I just linked the
kernel I wanted to boot to /boot.

-- 
Phil Nelson                    NetBSD: http://www.netbsd.org
e-mail: phil@cs.wwu.edu        Coda: http://www.coda.cs.cmu.edu
http://www.cs.wwu.edu/~phil