Nice patch I have one question and two requests. What's the benefit of having dynamic root partition number?
Can you please make patches against the unstable branch? Currently I'm adding parts of your patch so wait until revision 128. Also, I'm going to change the URL for unstable branch right now, will update this post and the first one in the thread with it.
And the last one: AFAICS the dynamic root partition number doesn't work yet because of unchanged install-chroot-part.sh