The mount utility attaches a udfs file system to the file system hierarchy at the mount_point, which is the pathname of a directory. If mount_point has any contents prior to the mount operation, these are
hidden until the file system is unmounted.
If mount is invoked with either special or mount_point as the only arguments, mount searches /etc/vfstab to fill in the missing arguments, including the specific_options. See mount(1M).
If special and mount_point are specified without any specific_options, the default is rw.
If the directory on which a file system is to be mounted is a symbolic link, the file system is mounted on the directory to which the symbolic link refers, rather than on top of the symbolic link itself.