Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!mailrus!ames!pasteur!ucbvax!MTUS5.BITNET!HEINEKEN
From: HEINEKEN@MTUS5.BITNET
Newsgroups: comp.sys.apple
Subject: BITNET mail follows
Message-ID: <8806262313.aa22063@SMOKE.BRL.ARPA>
Date: 24 Jun 88 17:19:00 GMT
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Date: 24 June 88, 12:14:51 EST
From: Steve King                                     HEINEKEN at MTUS5
To:   INFO-APPLE at BRL.ARPA

>                                                           Does
> anyone know of a utility for DOS 3.3 that will let you work at the
> byte level on an apple diskette and fiddle with the binary data in
> the file?
> Leigh Calnek

Try The Disk Doctor, from Penguin Software.  This is a very easy-to-use
disk recovery program for DOS 3.3.  I'm not sure if it will help in this
case, but it might.  There are also innumerable sector editors out for DOS
3.3, some of them even public domain.  A local users group can probably
set you up with one of these.

                                              --Steve King
                                                HEINEKEN @ MTUS5.bitnet