Does yours show up as an actual floppy drive? I have one for my wallstreet, and i cant use it with disk copy.
I just now used the VST Superdisk for the first time, on my Lombard running OS9.2.2.
With the extension installed, floppies are recognized as actual floppies, and Disk Copy 6.3.3 makes working disk images of the floppies. The drive won't read 400k or 800k floppies, sadly, only 1.4MB. Without the VST Superdisk extension, floppies are ignored.
Extensions Manager reports that the version of the VST Superdisk extension I have is 2.0. I assume I obtained the installer from the Macintosh Repository, but can't remember for certain.