>> I still think we should change DIOCWDINFO to write the raw label,
   >> even if there is no raw label.  [...]
   > I agree -- I like encapsulating this code in one place, and only one
   > place; and we can then prohibit user writes of the disklabel sectors
   > all the time, no matter what,
   
   I would find this last significantly annoying if it were to ever make
   it into any version I use; I regularly clone whole disks with (the
   moral equivalent of) dd if=/dev/rsd0c of=/dev/rsd1c.  Forcing
   special-casing of the label sectors would be a right pain in the butt.


see "disklabel -W"