OS 3.9 detects if you use an archive or drawer inside your Miggy.
You could put your HD in A PeeeCeee and run WinUAE with "-disablesafetycheck" in the command statement. And install OS3.9 from your PC, then put your HD back in the Miggy. :-D
:pint: :pint: :pint: :pint: :pint: :pint: :pint:
:cheers: