[pups] "/unix is not the running version." ??

Guys, Thanks for the help with my dzq11 problem - I'm glad to see that there are still people around running PDP-11 Unix. Now that I've actually started using my 11/73, I've run into several things that I just don't know how to fix. Like this one - I built a non-networking kernel (my normal /unix kernel has DEQNA and TCP/IP support) using the NONET example that comes with 2.11BSD. No particular problems there. Since I don't actually want to overwrite my /unix file, I can't use "make install" to install the nonet kernel, and so I just say "cp unix /nonet" and then chmod /nonet to set the protections. This might have been my mistake, but I don't know any other way to do it without trashing my real /unix kernel. To boot the nonet kernel, at the ":" boot prompt I type "nonet". All is well until we get up to init, and then it says autoconfig: /unix is not the running version init: configuration setup error And then I'm stuck in single user mode with no devices configured. Not especially useful. Is my mistake in just "cp"ing the nonet kernel, or is there some limitation on booting files other than /unix? Thanks again, Bob Armstrong