Making a Vinum-based Root Volume Accessible to the Bootstrap

[Petr Janda]

http://leaf.dragonflybsd.org/~justin/handbook/vinum-root.html

Is this still valid? Or has the FreeBSD 5 vinum been ported to DragonFly?

If it is still valid, can anyone go through the steps with me? I find it quite 
confusing and I dont want to make my system unbootable.

I mean like 1) do this 2) do that 3) done

Thanks!