>Matthew Green suggested something interesting ... Perhaps a library that 
>could live in userland (so that mdec programs could use it) and is copied 
>up to the kernel (a'la libc/libkern) ... this could help to address a 
>concern that Jonathan Stone had, that being that it would be nice to have 
>userland utilities to do cross-disklabeling from non-NetBSD platforms.

Just to be clear, the concern I had was also about userland utilities
to label (and install bootblocks on) a port-X boot disk from a
port-Y machine.