I prayed to googlegod in attempt to learn about Disk Copy 6.0.1. The only result was Disk Copy 6.1.2 User's Guide in a large organised collection of Macintosh files. (The same document is in Macintosh Garden, but not indexed by G.)
Do with it what you will.
http://toddp.com/classic/
edit add: I later found mention of "DiskCopy 6.0.1" in TidBITS#339/05-Aug-96 via Christoph Pfisterer's disktype Documentation.
http://tidbits.com/static/html/TidBITS-339.html
http://disktype.sourceforge.net/doc/ch03s13.html
