> I don't know about flashdist, 

It's a scriptfile to install openbsd on a flash, it tries to
automate what you have described to do by hand :-) But your
description gives better control.

>but here's my -2-0 net4501:
> 
> # df -h
> Filesystem    Size     Used     Avail Capacity  Mounted on
> /dev/wd0a      87M      45M       38M    53%    /
> mfs:58        7.5M     293K      6.8M     4%    /var

That was a very slim installation.

> Not really making anything specific to get it small, I compile it with
> all the possible MKXXX=no, and I think I leave out some binaries in the
> end.  It's been running fine for almost a year, completely read-only,
> without even sshd running, only console access.

Thank you very much Quentin!

/Regards from Sweden.