My apologies for miss-spelling kernel I had to type in the error
message after re-booting. One of my typing fingers is dyslectic.

Changing hd1 to hd0 worked. I can nest my settings and everything runs
at a good speed. When I Quit, the computer hangs part way through
unloading, so I have to press the re-set button. Re-booting tells me
that the pen drive had not been unmounted correctly, but continues with
the setup.

Now I can really impress my grandchilden!