Date   : Thu, 29 Sep 2011 18:18:48 +0100 (BST)
From   : dabenavidesd@... (Daniel Alejandro Benavides D.)
Subject: Superior Software ADFS Disc Protection

Hi all:
I found this of some interest, but anyways, the legal status of this I don't 
know (like in any software there are almost certainly bugs, then what would 
you do with that part of complexity of the thing of the problem if so), 
perhaps the (best) way to approach this and also of retro-interest could 
be construct a backwards-compatible floppy disk drive (I knew of somebody 
with this expertise, but in the other end, and to record CDROM copy protected 
disks, this is a hard work as well). This is to keep physical entire copies, 
rather than emulate a copy in software that would require harder work if
I may say so. I think the issue of copying is instrumental rather than technical,
but the recording is rather technical than instrumental (and technical is
a part of ethical)
Looking for that [1] are mentioned of the same series [2,3,4,5]

I have several copies of Mc Graw Hill License for 5?" disks material:

it's license reads ... 
" Here's what McGraw-Hill expects from you: 

1. McGraw-Hill licenses and authorizes you to use the software specified
below only on a microcomputer located within your own facilities.

2. You will abide by the Copyright Law of the United States. The law provides 
you with the right to make only one back-up copy. It prohibits you from 
making any additional copies, except as expressly provided by McGraw-Hill. 
In the event that the software is protected against copying in such a way
that it cannot be duplicated, McGraw-Hill will provide you with one back-up
copy at minimal cost or no charge.

3. You will not prepare derivative works based on the software because that
also is not permitted under the Copyright Law. For example, you cannot prepare
an alternative hardware version or format based on the existing software.

Here's what to expect from McGraw-Hill:

1. If you believe the diskette is defective, we will try to diagnose the 
problem over our Microcomputer Software Hotline: call toll free 800-782-3737, 
Monday through Friday, 8:30 A.M. - 4:30 P.M. EST (N.Y residents call 212-512-3314, 
collect.) Ifthe disktte is defective, we will replace ot at no charge. We
cannot, however, offer free replacement of diskettes damaged through normal
wear and tear, or lost while in your possesion. "

Thus it says to me the last point (1) that it is plausible to copy on a 
identical base but just in the case of the damaging of the natural properties
of it (nit even software I/O errors, crazy I think that as well, but that's
the ethical nature of software protection).

Thanks in advance

[1] K. G. Ashar, Magnetic Disk Drive Technology: Heads, Media, Channel, Interfaces,
and Integration, 1st ed. Wiley-IEEE Press, 1996.

[2] R. M. Bozorth, Ferromagnetism. Wiley-IEEE Press, 1993.
[3] C. Mee and E. Daniel, Magnetic Recording Technology, 2nd ed. McGraw-Hill
Professional, 1996.
[4] C. Mee and E. Daniel, Magnetic Storage Handbook, 2nd ed. McGraw-Hill
Professional, 1996.
[5] B. Bhushan, Tribology and Mechanics of Magnetic Storage Devices, 2nd
e. Springer, 1996.