I must correct myself and be more precise: > with some trivial arithmetic and some editing of disklabel you can > also mount a FreeBSD partition in OpenBSD
What I had was OpenBSD installed in a small slice and FreeBSD in a bigger in the same disk. I wanted to read the FreeBSD partition when booted FreeBSD. It was enough to edit the OpenBSD label to add the FreeBSD partition, and some arithmetic is necessary for it. It would be interesting to know if something is done for compatibility or this just works as far as developements of the BSDs dont diverge too much. Rod.
