>Dear Vax People,
>    How does one write a bootstrap for an scsi disk on 3100?  I see in
>/usr/mdec sdboot but no bootsd.  Both man pages for disklabel and
>installboot seem to imply there may be both boot blocks and a bootstrap
>program.  I do see a boot program but not one labeled sdboot.
>    Should I have a sdboot program?  Should I explicitly refer to the
>boot program for the secondary boot?  Should I be able to boot with just
>the boot blocks?
>    TIA for pointers suggestions.

disklabel -B sd0

should do the right thing.

Make sure /usr/mdec/boot is copied to /