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1992-08-18
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6KB
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Read me!
Before installing PROT.EXE read this document carefully!
Data Rx cannot be and will not be responsible for any losses that result from
using PROT.EXE.
We assume that you have read this file and know how to use PROT.EXE properly
before installation.
Protection System PROT.EXE by Data Rx.
Copyright (c) 1992 by Data Rx
Written by U.F.M. Software (92) All rights reserved.
PROT.EXE is a small protection program which is very easy to install.
PROT.EXE safely locks your PC and protects your data from unauthorized access.
PROT.EXE is an unusual program. It is not listed in CONFIG.SYS, AUTOEXEC.BAT,
or anywhere else. It runs automatically every time you boot.
Upon boot up PROT.EXE asks for your 5-character password which you selected
when you installed it. If someone wants to access PC, the password must be
entered correctly before DOS can be loaded.
PROT.EXE has four security modes: 0, 1, 2, 3. If the password is not entered
correctly, the protected system will respond for each of the security modes
as follows:
Mode System's response
0 The PC's hard disks will be "frozen" (will not boot).
The floppy drives (A: and/or B:) will work, so the PC can be
started from a bootable floppy disk.
1 The PC's hard disks will be "frozen" AND the floppy drives
(A: and/or B:) will not work. The PC can not be started from a
bootable floppy disk. Restarting the computer and entering the
correct password will provide access to both the floppy and hard
drives.
2 The PC will boot from the hard drive and the hard drive will be
accessible, but the floppy drives (A: and/or B:) will not work
and nothing can be copied from the hard disk. Restarting the
computer and entering the correct password will provide access
to both the floppy and hard drives.
3 The PC will boot from the hard drive and the hard drive will be
accessible, but the floppy drives (A: and/or B:) will not work.
Furthermore, the PC can not be started from a bootable floppy disk.
Restarting the computer and entering the correct password will
provide access to the floppy drives.
Do NOT try to change the CMOS setup to defeat PROT.EXE. PROT.EXE has not
changed anything in CMOS. The PROT program is based on a detailed (and
undocumented) procedure of DOS booting, not on the CMOS settings.
PROT.EXE does not encode the master boot record (MBR) data area.
PROT.EXE does not make use of hardware.
In Modes 0 and 1, the only way the protected hard disk can be read
without the password is by physically removing it and subjecting it to
certain data recovery procedures. In Modes 2 and 3,
the hard disk can be read, but nothing can be copied from it to floppies.
Handy PROT.EXE Matrix
Mode Can I Boot from floppy? I don't know the right password and
Number I'm booting from the hard disk.
0 YES Computer's hard drive will freeze.
1 NO Computer's hard drive will freeze.
2 YES Computer's hard drive will work, but
floppies will not work.
3 NO Computer's hard drive will work, but
floppies will not work.
How to install PROT.EXE
1 Turn off all caching software before installing PROT.EXE
2 Insert the PROT.EXE disk in your floppy drive. Log to the floppy
drive.
3 Type the command PROT P <mode number>. As an example you could
type PROT P 0 or PROT P 1. Note that there are spaces between PROT
and P and between P and the <mode number>. Also note that the
switch number is not enclosed in the pointy brackets <>.
The P between PROT and the number stands for the protection mode
you wish to utilize.
4 PROT.EXE will ask you for your password.
Your password must be exactly five alphanumeric characters long.
Uppercase characters are different than lower case letters.
As an example: Captain Kirk's password "SPACE" is different from
Mr. Spock's password "space" and Scotty's password "SpAce".
5 After you enter your password PROT.EXE will verify your password
before allowing you to proceed.
6 Reboot after installation. PROT.EXE has been installed
and your computer is protected.
Other PROT.EXE Switches
C use this <switch> if an attempt at installation results in the error
message: "Track 0 Head 0 Sector 2 is not free"
This error message means that PROT.EXE found something
(either a virus or special coding) in your MBR. If you use the "C"
switch. Example: PROT C. PROT.EXE will overwrite the data located
on the MBR at Track 0, Head 0, Sector 2.
Overwriting this data may result in total loss of access to
the hard disk.
Do not use the C switch unless you are certain you know what you
are doing. You may never regain access to your hard disk without
extensive data recovery procedures.
Data Rx cannot be and will not be responsible for any losses
that result from using PROT.EXE.
U removes PROT.EXE and cancels protection (see WARNING below).
Example: PROT U.
? for the help file. Example: PROT ?
I for the help file. Example: PROT I
H for the help file. Example: PROT H
WARNING!
Before installing PROT.EXE, turn off cache software.
Before adding any new command(s) to your CONFIG.SYS file, remove PROT.EXE.
If you forget to turn off PROT.EXE and protect modes 1 or 3 are on, AND if
your PC for any reason does not support the new driver you are adding to
your CONFIG.SYS file, your system will "freeze" and DOS will never load!
The hard disk will have to be removed and subjected to extensive data
recovery efforts.
(c) 1992 Data Rx
Phone: 415-546-6450
Fax: 415-546-1708
BBS: 415-546-1664
Toll-free: 800-234-4379
PROT.EXE