Disk No: 1279
Program Title:  THE NAVIGATOR, DISKDUPE, VIRUSCHK version 1.12
PC-SIG version:  2

Navigate around your hard disk with a sailor's ease.  Copy and format
disks swifter than a whitewater raft.  And fight off pesky computer
viruses before they attach to your hull!  Here's an able crew to make
your computing life smooth sailing.

A hard disk menu program, NAVIGATOR helps you get around your hard disk
without having to remember DOS commands.  You access programs and
directories with point-and-shoot menus.  When you boot up, the program
lists up to 200 directories, programs, and files.  Twenty three files
are displayed at a time.  To access a directory, or run a program, point
an arrow at it and press ENTER.  A handy command lets you instantly move
to the root directory.  You can quickly display or erase files and empty
directories.

DISKDUPE was made for folks who need to duplicate lots of programs or
disks.  Versatile, it copies 5.25" diskettes whether they are standard
360K, AT high-density 1.2M disks, or even CPM/86 with eight sectors.  It
also handles 720K and 1.4M 3.5" diskettes.

It's fast!  It duplicates 360K disks in less than 58 seconds.  Using
preformatted disks, the time drops to less than 26 seconds.  DISKDUPE
uses your hard disk as a buffer so you can copy high density disks
exceeding your RAM memory without slowing down.

You can quickly format disks ahead of time, make image files from a
diskette onto your hard disk, and specify a list of hard disk image
files to create or copy from.  It runs manually, or along with special
auto-loader hardware available from the author.

VIRUSCHK is a program to detect the effects of viruses.  Viruses can
destroy days, weeks, and months of your effort.  If you know that a
virus is damaging your files, you can recover.  The real danger is when
your data files are corrupted over time so that even the backups are
invalid.

VIRUSCHK reads all the files in a subdirectory and performs a summing
and encryption algorithm on each byte of the file, then stores this data
in a special data file.  Because you can (and should) change the
algorithm, viruses can not add non-functional code to defeat the
detection.  Then, when VIRUSCHK is re-run it will compare the code
signatures to those it calculated before.  If the file is unchanged no
further action will be taken.  If the file date and time as well as
contents have changed, for example when you installed a different
driver, VIRUSCHK will announce that a change has occurred and ask if you
want to update the data file.  However, if the file contents but not the
time or date have changed, you will be warned of the possible virus
infestation.  If you made the change intentionally you can still update
the data file.

Usage:  Hard Disk Utilities.

Special Requirements:  Hard disk.

How to Start:  Type GO (press enter).

Suggested Registration:  $10.00 for The NAVIGATOR, $39.00 for DISKDUPE,
$10.00 for VIRUSCHK.

File Descriptions:

AUTONAV  BAT  Batch file used in installation program.
CONTENTS TXT  Describes files.
DISKDUPE DAT  Data file.
DISKDUPE DOC  User guide.
DISKDUPE EXE  Main program.
DISKDUPE OVR  Overlay file.
HELPME   EXE  Prints troubleshooting form.
INSTALL  EXE  Installs Navigator.
NAVCOLOR COM  Color screen program version.
NAVIGATE DOC  User guide.
NAVIGATE FRM  Registration form.
NAVMONO  COM  Monochrome screen program version.
DDINFO        Information about DISKDUPE.
VIRUSCHK EXE  Main program.
VIRUSCHK TXT  Documentation file.

PC-SIG
1030D E Duane Avenue
Sunnyvale Ca. 94086
(408) 730-9291
(c) Copyright 1989 PC-SIG, Inc.