I recently came across a Decstation 3000/400 I would like to install
NetBSD on. I've moved the hard drive to another DECstation running
port-pmax, and tried to dd the install image onto it. I'm getting this
error message:

> dd if=cdhdtape bs=16k of=/dev/rz1c
dd: /dev/rz1c: Read-only file system

	Must I prepare the disk in some way? It's currently disklabelled with one
partition rz1a filling the whole disk, in addition to rz1c
	Thanks much

Gregory