That is just as good as type 1, 0, 2, 7, etc.!
funny what you run into with Google!
http://www.csulb.edu/~murdock/drivparm.html
says that type 3 is single density 8"!
(and type 4 is double density 8")
I wonder which versions of MS-DOS and which, if any, of PC-DOS support
THOSE drive types directly?