Re: 6.6 on t400

I had some similar troubles with my T400 when installing 6.6 a couple of months back. I had to ensure that I was using integrated graphics, and it worked fine. So you could try altering the bios graphics setting (under Config/Display) to "Integrated Graphics". Also ensure you have run fw_update.

Re: using installboot to create a custom OpenBSD install on sd1

It looks to me that you're trying to find a way to quickly set up new machines which share a similar OpenBSD configuration? Can I suggest an alternative approach to help achieve this... Read through: man autoinstall. You can use this approach to set up machines quickly across a LAN. To get it goin