er, yes its 'reasonable'. :-)
Your Amiga cannot read HD diskettes, so format it as 720Kb on PC and if it still doesn't work use 'mount PC0:' on Amiga.
You'll need some utilities for formatting to 720Kb in case you use winXP.
Reading Amiga diskettes on PC is another story. It should be possible if you got 2 drives; forget about writing. Also, there is some extra hardware that can do it.