If I'm not mistaken, you should be able to edit the plan9.ini file on a PC, to set the source you want to boot from. However, I did that only once, and I don't remember the details... look up plan9.ini(8) (http://lsub.org/magic/man2html/8/plan9.ini), boot(8) (http://lsub.org/magic/man2html/8/boot) and booting(8) (http://lsub.org/magic/man2html/8/booting) for details, etc..
> @Gorka Guardiola > @Tassilo Philipp > > Thanks for the warnings, and friendly advice :) > > I think I'll just use a bare 2nd HDD on the same machine, or a junker > box kicking around. > > Do you guys know if Plan9 will boot off a slave HDD? > > -- > Duke > > >