> what a coincidence, I'm trying to build a Beowulf installer using a
> Chimaera kernel :D (I have to install Beowulf on a HP laptop that
> doesn't allow disabling "Rapid Storage Technology"...)
> I've not managed to do it yet, but I think the starting point is
> https://git.devuan.org/devuan/installer-iso

Thanks Joril for the pointer.

In the mean time I resorted to a workaround by using debootstrap
and an own boot media which partitions the relevant disk and
transfers the debootstrap outdata into the needed place.

If nothing else helps, this might be applicable in your situation too.

> I'll report back if I find out more details

Good luck!

/Dal