I'm looking at installing 1.3_ALPHA (or _BETA by the time I get to it) on
a 3100 which has ULTRIX on it. Since the environment doesn't have
netbooting set up (and I have a spare disk), I'd like to just dd the
diskimage onto it.

All the install instructions with _ALPHA basically are

disklabel -W the/drive
gunzip -c the_image| dd of=/the/drive bs=10240

What do I do under ULTRIX as the equivelant of the disklabel -W command
(which is basically just unlocking the boot sectors)?

Take care,

Bill