I used HPDir to dup the two floppies from a physical
9121D drive into .HPI image
 files, then verified that the 1630D can access those .HPI image files loaded into
 HPDrive to emulate a 9121D drive.
 I can send those two .HPI image files to anyone who wants them. 
Glen,
Could you upload them to 
http://www.ko4bb.com/
So the measurement community can access them also?
-Rik