I saw your issue about making a copy of an old hard drive for safe keeping.
I'm in a similar situation, so I built a home-grown ISO where I downloaded FreeDOS and dropped in PQMAGIC's multiple floppy-based files into a folder.
That CD boots quickly and I use it along with a large drive that I carry around to backup partitions of important PCs (old machines no one knows how to fix).
The floppies work too, but they're slower. The ISO's like 30mb.