Vnconfig is a utility to mount ISO image files on O/LBSD.
As root: vnconfig vnd0 /home/user/disk_image.iso http://www.cyberciti.biz/faq/mounting-iso-images-on-openbsd/ http://man.openbsd.org/vnconfigThe vnconfig command configures vnode pseudo disk devices. It will associate (or disassociate) the special file vnd_dev with the regular file image, allowing the latter to be accessed as though it were a disk.