>> Currently the system needs to either run with INSECURE, or be in
>> single user mode to install bootblocks.

This is not my experience.  As another message said...

> Installboot to /dev/r[fs]d?c can do the trick.

...though that works only when the c partition begins at the same point
as, and is at least as large as, the partition you're trying to set up
as bootable.  Since this is port-sparc, the c partition is the raw
partition, so the size issue is ignorable for this example; I mention
it because you can also use any other partition that satisfies those
two conditions - I often partition my disks with another partition
(typically i or p) identical to the a partition specifically so that I
can installboot easily.

					der Mouse

			       mouse@rodents.montreal.qc.ca
		     7D C8 61 52 5D E7 2D 39  4E F1 31 3E E8 B3 27 4B