============================= LockDevice =============================
======================================================================
A  utility  written by Olaf 'Olsen' Barthel of MXM.  Copyright, © 1990
by  MXM.  Shareware, all rights reserved.  No guarantee of any kind is
made that the program(s) described in this document are 100% reliable.
You use this material on your own risk.

============================== Purpose ===============================
======================================================================
If  you have ever accidentally formatted your hard disk drive, you are
probably  searching for an equivalent to the small black write protect
tab used by floppy disks.  If locked, FastFileSystem rejects all write
requests, but that still is not enough since you can still go directly
to the device driver and ask to format a track.  'LockDevice' installs
a  patch  at  the  device driver level to reject all icoming write and
format  requests  thus  reducing the chance of accidentally formatting
the hereby protected data media.

=============================== Usage ================================
======================================================================
LockDevice  can  be  called from Shell only.  Note that arp.library is
required to run the program.

You'll get the following cli template:

Drive,L=Lock/K,K=Key/K,S=Show/S,Info/S,Q=Quit/S

Drive..	The name of the disk drive to be locked/unlocked

Lock...	This switch determines if the drive is going to be locked
	or unlocked. use 'Lock on' to lock a drive and 'Lock off'
	to unlock it.

Key....	A optional password to be used as an access key to unlock
	a drive.

Show...	Show all currently locked drives.

Quit...	Remove all locked devices. Note that this command will break
	if there are any locked devices protected by passwords.

============================ Limitations =============================
======================================================================
Since  it  is  possible to create a number of partitions from a single
device  driver  unit, it is possible that locking one device will also
lock  other partitions.  'LockDevice' will detect these situations and
ask  you  whether  it should continue or not.  The 'Show' command will
list  all  locked  devices, but only those can be unlocked directly by
'LockDevice' which are displayed in colour three (i.e.  orange).

=============================== Author ===============================
======================================================================
This  program was written by Olaf Barthel of MXM.  All files have been
placed in the public domain.  You may freely distribute this material,
even  a  small  copy  fee  is  okay  but  everything  which looks like
commercial distribution is forbidden.  Still you may use this material
for software development without giving credit to the original author.

We  distribute  this  program the the accompanying files as Shareware.
If  you  like 'LockDevice' and use it frequently, please send at 7 US$
or  DM  15,- to cover our media costs.  If you enclose a self adressed
(and  stamped) envelope you will receive new material and updates from
MXM.

Send   new   program  revisions,  comments,  bug  reports,  donations,
unmarried   sisters,   non-poisoned   candy,  home-grown  palm  trees,
horoscopes,  promising  capital investments, etc. to:

                          Olaf Barthel, MXM
                          Brabeckstrasse 35
                          D-3000 Hannover 71

                     Federal Republic of Germany

============ Revision history (most recent change first) =============
======================================================================
V1.0	Obviously, it works.

                                  *

             Do only its possibilities make it an Amiga?

                        WHERE IS THE MAGIC ???