Steve,
I don't expect there IS a second hole in the disk, but I asked to be sure...... so Scott might be confused as well after you told him to cover the 2nd hole.
A few years ago I had problems with creating a bootable FD (upgrade software) for the KN3000 (Technics) because of a 'secret' format..... Technics did not want customers to upgrade the OS themselves.
Because most customers did not like this attitude of Technics we found a way to copy the disk using the DOS program DISKDUPE51 and with DOSIMAGE.EXE it can be attached to emails
On Matti Sairanens' site this method is still used to upgrade KN OS-ses.
DISKDUPE creates a true BITWISE copied disk, exact copy !
Scott : Please email me if you want it !