I will look in to finding the Disk Copy 6.x format documentation.

As to directly running Disk Copy, that's a no go, as Mini vMac doesn't really emulate a floppy drive. Actually, that seems to be a shortcoming of all of the Macintosh emulators. For most purposes, it doesn't really matter, but for image creation and writing, it is somewhat critical. I have tried Basilisk II, MESS, Mini vMac, and Sheepshaver.

Thanks!