Realice el montaje en un entorno de generación diferente y el desmontaje del otro entorno de generación.
root@sup46:~# beadm mount s_backup /mnt
root@sup46:~# df -k /mnt
Filesystem 1024-blocks Used Available Capacity Mounted on
rpool1/ROOT/s_backup 286949376 2195449 232785749 1% /mnt
root@sup46:~# df -k /
Filesystem 1024-blocks Used Available Capacity Mounted on
rpool1/ROOT/s_backup 286949376 2214203 232785749 1% /
root@sup46:~# ls /mnt
bin etc lib opt rpool1 system wwss
boot export media pkg sbin tmp
cdrom home micro platform scde usr
dev import mnt proc share var
devices java net re shared workspace
doe kernel nfs4 root src ws
root@sup46:~#
root@sup46:~# beadm umount solaris
root@sup46:~#