"-o union" was last in 3.7, disappeared in 3.8. Was there a reason? https://man.openbsd.org/OpenBSD-3.7/mount Rodrigo
What also would be practical is a "mount -o union" like in FreeBSD, but unfortunately I do not see it in OpenBSD. Then one could mount a mfs system over a normal one, only to be read. Rodrigo
