This article covers automatic OpenBSD installation over the network and from USB thumb drive.

First part briefly discusses the problem at hand and motivations.

Second part discusses the procedure to manually prepare images and file sets, diving in the methodology.

Third part introduces puffmatic - a script that automates above steps.

If you are familiar with unattended installation, you can skip intial discussion and jump stright to puffmatic.

If you are curious how it works, I recommend going through whole article, so you can troubleshoot if anything goes sideways.