> Unfortunately I do not seem to be able to correctly label the new disk so
> it can boot.

You are probably running into the same problem I had: the disk may need to
be freshly formatted. NetBSD's RAM disk kernel can't do this at present.

> P.S. I failed also to make a bootable installation tape - I suspect my
> old 160 board does not gronk my QIC-150 or visa-versa (I get a short read
> error when tapeboot tries to finish loading netbsd-rd).

The "short read" may occur because the tape driver is failing to
handle the QIC drive properly. Sometimes it can be circumvented by writing
a tape with shorter or longer blocks, but sometimes not. The Archive/Emulex
combination on my Sun 3 always worked under SunOS but does not work under
NetBSD.

--Brett