According to the documentation, it should not be difficult to
set up a root volume which is readonly.  I have followed the
instructions to create a readonly volume, and I know I have done
so, because I can mount it, read everything in it, and I can't
write to anything in it.

(Just to be clear, I used volutil to clone, dump, and restore
the root volume.)

Then I put the volume name in /vice/db/ROOTVOLUME, stopped
everything, and restarted everything.  Would you believe,
I can still write in the root directory!  What is missing from
the instructions?

     -- Owen
     LeBlanc_at_mcc.ac.uk