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-
- THE PC-Lock HARD DISK PROTECTION SYSTEM
- Version 1.1F
- (c) Copyright 1986 by
-
- Johnson Computer Systems
- 20 Dinwiddie Place
- Newport News, VA 23602
- (804) 872-9583
-
- 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 press return and
- re-type it correctly. When you boot from a diskette the system
- will boot normally, but you will not be able to access your hard
- disk.
-
- At any time after your computer 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.
-
- 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 protection 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 SINCE VERSION 1.0
-
- 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.
-
- 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.
-
- Support was added for systems with an enhanced graphics adaptor,
- systems with two displays and two hard disks.
-
- A de-installation information file is no longer created during
- the installation process. Some users have had a problem with
- losing or re-formatting the diskette, so we did away with it
- altogether. It is, therefore, no longer necessary to have a
- floppy in drive A: during installation.
-
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- PC-Lock Version 1.1F - Page 1
-
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- All problems which have been reported have been fixed and
- verified. These included one "bug" which occurred when drive A:
- was not ready, and a few combinations of clones and operating
- system versions. As far as we know, PC-Lock will run on all true
- compatibles and all versions of PC-DOS and MS-DOS, however we
- cannot guarantee that it will run on your particular machine.
-
- The ADMIN (administrator) utility was added to allow a system
- administrator to be able to gain access to all of the computers
- under his control with a single password unknown to the users of
- those computers. They will continue to have their own passwords
- as before. This feature is available only in version 1.2F.
- Information on how to receive this version is provided below.
-
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- FUTURE ENHANCEMENTS
-
- It is not presently anticipated that there will be future
- releases of PC-Lock beyond version 1.2F. If specific users
- ordering a sufficient number of copies wish to have special
- features added for their use, we would be glad to discuss the
- possibility of providing them. We have produced software which
- allows only certain users to write to the hard disk, controls
- copying of programs and or data from the hard disk to a floppy,
- limits access to specified directories, etc, etc.
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- SYSTEMS ON WHICH PC-Lock MAY BE USED
-
- 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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- HOW PC-Lock IS DISTRIBUTED
-
- 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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- PC-Lock Version 1.1F - Page 2
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- YOUR PC-Lock LICENSE - (Contingent upon acceptance of disclaimer)
-
- You are licensed to copy and share complete and unmodified copies
- of this program with whomever you wish. Complete means that all
- files described below are shared as a package. 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 Computer Systems
- and paying a one time fee. Registration will automatically give
- you a permanent license for the use of PC-Lock on a specific
- number of systems, and a free copy of PC-Lock version 1.2F. The
- registration fee is:
-
- Number of Computers Fee per Computer
- 1 - 5 $17.50
- 7 - 15 $15.00
- 16 - 99 $12.50
- 100 - Up $10.00
-
- The number of computers is the maximum number on which PC-Lock
- will be installed at any one time. Please add $4.00 to your
- order for each diskette you wish for us to send. Normally, this
- will be a minimum of one diskette to contain your copy of version
- 1.2F. If you are located in Virginia, please add 4% state sales
- tax.
-
- Non-commercial 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. Please add the $4.00
- media fee if you wish us to send a copy of version 1.2F.
-
- Please use a copy of the registration form at the end of this
- document. Please do it right away as procrastination is my worst
- enemy. Thank you for your support.
-
- YOUR PC-Lock FILES
-
- Now that all of the commercials are over, we can describe PC-Lock
- in more detail. The PC-Lock system consists of the following
- files:
-
- 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.
-
- ADMIN.COM - (Version 1.2F only) A utility which allows an
- administrator to place a password into the
- INSTALL.COM file. This password then becomes the
- administrators password on each machine in which
- INSTALL.COM is used.
-
- PASSWORD.COM - A utility which allows a user to change his or
- her password, or the system administrator to
- change either password.
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- PC-Lock Version 1.1F - Page 3
-
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- UNLOCK.COM - A utility to allow access to the hard disk when
- booting from the floppy if the proper password is
- known. This will allow you to correct problems
- on the hard disk which prevent system boot. We
- are sure that you would never inadvertently
- destroy your COMMAND.COM file, but if the
- unbelievable ever does happen, UNLOCK will give
- you access to the disk so that you can correct
- the problem.
-
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- 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.
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- UNHIDE.COM - A utility to make hidden files visible.
-
- PC-LOCK.DOC - This file.
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- HOW TO INSTALL PC-Lock ON YOUR COMPUTER
-
- Place your PC-Lock diskette in drive A: and enter:
-
- A:INSTALL
-
- That's all there is to it. Your password is now PASSWORD. You
- may change it at any time by placing a copy of your PC-Lock
- diskette in drive A: and entering:
-
- A:PASSWORD
-
- and following the directions on the screen. The PASSWORD utility
- may reside on any disk but we recommend that you do not place it
- on your hard disk for security reasons. We also suggest that an
- administrator not give the UNLOCK and DESTALL programs to users.
-
- A COUPLE OF CAUTIONS
-
- 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.
-
- Do not lock your keyboard while a debugger, such as DEBUG.COM, is
- running.
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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 PC-
- Lock diskette in drive A: and enter: A:DESTALL
- You must know your password. If an administrator password has
- been installed, it is the one that must be used.
-
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- PC-Lock Version 1.1F - Page 4
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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.
-
- 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.
-
- UNHIDE
- This utility reverses the action of HIDE, and is used in exactly
- the same way.
-
- 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. If an administrator password has been entered,
- it is the one that must be used.
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- PC-Lock Version 1.1F - Page 5
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- PC-Lock Registration Form
-
-
- Johnson Computer Systems
- 20 Dinwiddie Place
- Newport News, VA. 23602
-
-
- We have evaluated PC-Lock and determined that it is suitable for
- our purposes. Having agreed to the terms of the disclaimer
- provided by you in the PC-Lock documentation, we would like to
- purchase a permanent license to concurrently install PC-Lock
- Version 1.1F or 1.2F on the number of computers indicated below.
-
- Number of Computers Fee per Computer
- 1 - 5 $17.50
- 7 - 15 $15.00
- 16 - 99 $12.50
- 100 - Up $10.00
-
- Number of concurrent installations______________ Fee ___________
-
- Number of PC-Lock diskettes to be shipped ($4.00 Ea.) ___________
- (Order at least one if you wish to receive version 1.2F)
-
- Virginia State Sales Tax (if your address is in VA) ___________
-
- Total Order ___________
-
- Name of company (if any) ________________________________________
-
- 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 1.1F - Page 6