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- THE PC-Lock HARD DISK PROTECTION SYSTEM
- Version 1.1
- (c) Copyright 1986 by
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- Johnson Computer Systems
- 20 Dinwiddie Place
- Newport News, VA 23602
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- WHAT PC-Lock DOES
-
- After you install PC-Lock you will be asked to enter your password
- each time you boot your computer from your hard disk. Just type
- your password and press return. The boot process will continue
- normally. If you make an error, just re-type it correctly and
- press return. When you boot from a diskette the system will boot
- normally, but you will not be able to access your hard disk.
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- At any time while you are you are using your computer, after it has
- finished booting, you may press the shift key on the left side of
- your keyboard 3 times in succession. This will cause the screen to
- become completely blank. The computer will continue with the task
- it was performing, but will "throw away" any characters typed at
- the keyboard (including Ctrl-Alt-Del) until you enter your password
- as described above. The screen and keyboard will then return to
- normal.
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- It's just that simple, yet it will provide a significant level of
- protection for your system both when it is booted, and while you
- are away having a nice lunch. PC-Lock is a software solution to a
- security problem and is probably somewhat more secure than the lock
- on your front door. A sufficiently knowledgeable and determined
- individual will be able to circumvent the system, as indeed any
- software security system can be circumvented. The level of protec-
- tion is, however, sufficient for most purposes. (PC-Lock files are
- encoded, and will not decode themselves if someone is using a
- debugger to find out how they work.)
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- ENHANCEMENTS IN VERSION 1.1
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- The UNLOCK utility described below was added to allow access to your
- hard disk after you boot from a floppy. You must know your password
- to use this utility.
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- Changes were made to allow PC-LOCK to work properly with all Western
- Digital hard disk controllers. Some Western Digital controllers
- contain a bug which caused PC-LOCK 1.0 to fail.
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- SYSTEMS ON WHICH PC-Lock MAY BE USED
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- PC-Lock is intended for use on any IBM compatible computer having a
- hard disk which was originally set up using the DOS FDISK utility.
- This includes almost all hard disk systems which allow you to boot
- directly from the hard disk without using a floppy diskette.
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- PC-Lock Version 1.1 - Page 1
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- HOW PC-Lock IS DISTRIBUTED
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- PC-Lock is a professionally developed and fully copyrighted soft-
- ware system which is marketed in a manner uniquely suited to
- quality computer software. You are not only allowed, but actively
- encouraged to copy and to share your COMPLETE and UNMODIFIED copy
- of PC-Lock with your friends, business associates, and Bulletin
- Board Services. (SYSOPs will appreciate your contribution to their
- BBS.) You may try the program to ensure that it will meet your
- needs without risk since you pay nothing until you decide to use
- the program on a regular basis.
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- YOUR PC-Lock LICENSE - (Contingent upon acceptance of disclaimer)
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- You are licensed to copy and share complete and unmodified copies of
- this program with whomever you wish. Complete means that all six
- files described below are shared as a package.
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- Commercial users are licensed to use PC-Lock on any number of
- computers for evaluation purposes. If you wish to continue using
- PC-Lock after a reasonable evaluation period (10 days suggested)
- you may do so by registering your copy of PC-Lock with Johnson Com-
- puter Systems and paying a one time fee. Registration will auto-
- matically give you a permanent license for the use of PC-Lock on a
- specific number of systems, a free copy of the next version of
- PC-Lock, and automatic notification of any additional enhancements
- and updates. The registration fee is:
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- Number of Computers Fee per Computer
- 1 - 5 $17.50
- 7 - 15 $15.00
- 16 - 99 $12.50
- 100 - Up $10.00
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- The number of computers is the maximum number on which PC-Lock will
- be installed at any one time. If you wish to receive one or more
- copies of PC-Lock directly from Johnson Computer Systems please add
- $4.00 per diskette desired. If you are located in Virginia, please
- add 4% state sales tax.
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- Non-commerical users are encouraged (though not required) to
- register their copy at the $17.50 rate if they find the program of
- sufficient value to continue using it.
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- Please use a copy of the registration form at the end of this docu-
- ment. Please do it right away as procrastination is my worst enemy.
- Thank you for your support.
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- PC-Lock Version 1.1 - Page 2
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- PC-Lock is a professionally developed and extensively tested prod-
- uct. New features will be added if there is sufficient interest
- from current users. Possible features include:
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- Password protection of individual directories or trees.
- Logging of unsuccessful logon attempts.
- Logging who is working on what projects when.
- Automatic "on-the-fly" encoding/decoding of specified files.
- Whatever else users request.
- Please send suggestions to the address below.
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- DISCLAIMER
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- PC-Lock is sold on an "as-is" basis without warranty of any kind.
- It is up to you to determine if PC-Lock is suitable for your pur-
- poses. We have carefully designed and tested PC-Lock and neither
- we nor our beta testers have found any errors in the program. We
- cannot, however, be sure that there are none, nor can we ensure
- that the system on which you install it will be error free. We do
- not know of any commercial software which is incompatible with
- PC-Lock, but we cannot be sure that none exists. Therefore, having
- made this disclosure, the entire risk of using PC-Lock is yours.
- You are not licensed to use PC-Lock if you do not fully accept
- these conditions.
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- YOUR PC-Lock FILES
-
- Now that all of the commercials are over, we can describe PC-Lock
- in more detail. The PC-Lock lock system consists of the following
- files:
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- INSTALL.COM - Installs PC-Lock on your computer.
- Verifies that PC-Lock can be correctly installed on
- your computer, places a new line in your CONFIG.SYS
- file, and places a new device driver file in the
- root directory of the hard disk from which your
- system is booted.
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- PASSWORD.COM - A utility which allows you to change your password.
- DESTALL.COM - A utility which removes PC-Lock from your system.
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- HIDE.COM - A utility to hide your CONFIG.SYS and PC-Lock
- device driver files so causal observers will not see
- them. (They won't by listed by a DIR command, etc.)
- HIDE may also be used to hide any other files.
- UNHIDE.COM - A utility to make hidden files visible.
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- UNLOCK.COM - A utility to suspend PC-Lock protection.
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- PC-LOCK.DOC - This file.
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- PC-Lock Version 1.1 - Page 3
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- HOW TO INSTALL PC-Lock ON YOUR COMPUTER
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- You need to have a floppy diskette which contains your PC-Lock
- files. Do not place a write protect tab on the diskette at this
- time.
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- Place your PC-Lock diskette in drive A: and enter:
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- A:INSTALL
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- After the installation procedure completes automatically, make a
- second copy of the diskette in drive A: and place write protect
- tabs on both of them. These diskettes now contain information
- unique to your specific computer and will be required should you
- ever desire to remove PC-Lock from your system. Place these dis-
- kettes in a secure place so that you (and only you) can remove
- PC-Lock.
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- Your password is PASSWORD. You may change it at any time by
- placing a copy of your PC-Lock diskette in drive A: and entering:
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- A:PASSWORD
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- and following the directions on the screen. The PASSWORD utility may
- reside on any disk(ette) but we recommend that you do not place it on
- your hard disk for security reasons.
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- A COUPLE OF CAUTIONS
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- Do not install a program which "takes over the keyboard" such as
- Prokey, Superkey, Sidekick, etc. while you have the keyboard locked
- as described above. Such programs may be installed at any other
- time.
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- Do not lock your keyboard while a debugger, such as DEBUG.COM, is
- running.
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- PC-Lock Version 1.1 - Page 4
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- HOW TO USE THE OTHER UTILITIES
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- DESTALL
- If you wish to remove PC-Lock from your computer, place your
- installation diskette in drive A: and enter: A:DESTALL
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- HIDE
- Place your PC-Lock diskette in drive A:. If you wish to hide the
- PC-Lock device driver file and the CONFIG.SYS file, just enter
- A:HIDE
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- If you wish to hide other files enter: A:HIDE filespec replacing
- "filespec" with the drive, path, and file name. If the drive is not
- specified, the current logged drive will be used. If the path is
- not specified, the current directory will be used. The file name
- may contain wild cards. The HIDE utility may reside on any disk.
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- UNHIDE
- This utility reverses the action of HIDE, and is used in exactly
- the same way.
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- UNLOCK
- This utility allows you to access your hard disk after you boot
- from a floppy disk, but you must still know your password. Just
- enter A:UNLOCK. You will be asked for your password. After you
- enter it correctly, you will be informed that PC-Lock protection
- has been suspended. Re-boot your system from a floppy and you
- will be able to access your hard disk. PC-Lock protection will
- automatically be reinstated the next time you boot your system
- your hard disk.
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- PC-Lock Version 1.1 - Page 5
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- PC-Lock Registration Form
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- Johnson Computer Systems
- 20 Dinwiddie Place
- Newport News, VA. 23602
-
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- We have evaluated PC-Lock and determined that it is suitable for
- our purposes. We would like to purchase a permanent license to
- concurrently install PC-Lock Version 1.1 on the number of computers
- indicated below.
-
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- Number of Computers Fee per Computer
- 1 - 5 $17.50
- 7 - 15 $15.00
- 16 - 99 $12.50
- 100 - Up $10.00
-
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- Number of concurrent installations______________ Fee ___________
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- Number of PC-Lock diskettes to be shipped ($4.00 Ea.) ___________
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- Virginia State Sales Tax (if your address is in VA) ___________
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- Total Order ___________
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- Name of company (if any) ________________________________________
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- Attention _______________________________________________________
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- Dept./Mail Stop _________________________________________________
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- Street Address __________________________________________________
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- City, State, Zip ________________________________________________
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- PC-Lock Version 1.1 - Page 6