Gradual Epiphany

Notes on Creating an OpenBSD DVD

I recently rebuilt my gateway box using OpenBSD 4.1. It’s pretty easy to construct a DVD that ensures you have all the stuff you need for an install. The tricky thing is getting the DVD setup to boot. Herein are my notes so that the next time I need to do this I can remember how. :)

There are two tricks to get this to work. First, use the mkhybrid from MacPorts. Secondly, make sure that the location of the boot image is inside the hierarchy of files being burned to disk. I’m not sure why mkhybrid requires this, but it means the difference between working or not. Ultimately the command line should look something like:

mkhybrid -joliet-long -iso-level 4 -r -b 4.1/i386/cdrom41.fs -c boot.catalog -o obsd.iso OpenBSD