> Is the OpenBSD installer only available in a boot image? Or can I run the > OpenBSD installer in a running system and do an installation of a newer > version of OpenBSD to another partition/disk? Essentially, what I'm asking > for is something like FreeBSD's /stand/sysinstall, which can be run in a > live system to configure or upgrade the system.
you want sysinstall, use freebsd. if you do use the installer in a running system, it might work but it is foolish in OpenBSD land.