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AVDISK.TXT
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AVDisk 8.1l
===========
System requirements:
- 80386 or better processor
- MS-DOS 4 or better
- Pkzip 2.5 or better and Pkunzip, both for DOS (http://www.pkware.com)
1. The purpose of this program
------------------------------
AVDisk will help you create a set of rescue disks. Booting from
clean rescue disks is necessary when your computer becomes
infected with a memory resident virus. By booting from a floppy,
the virus won't be activated and therefore won't be able to
install itself in memory where it could otherwise interfere with
the scanning and cleaning process.
Please note that no virus scanner is 100% fail-safe, no matter how
diligently you update it and regardless of what the scanner
manufacturer tells you. It is of paramount importance that you
practice what is called "safe hex", i.e. that you follow a set of
safe computing rules. The importance of safe hex cannot be stressed
enough.
Competent and free information about viruses and virus protection
can be found here: http://claymania.com/nav-map.html
2. What is on the rescue disks?
-------------------------------
One of the disks contains the DOS operating system. One or more
additional floopy disks contain the DOS version of an anti-virus
program.
Currently, the following anti-virus programs are supported:
- F-Prot (http://www.complex.is)
- AVPDOS32 (http://www.avp.ch)
- McAfee ScanPM (http://www.mcafee.com)
- ESET NOD32 (http://www.nod32.com.au)
- EZ Antivirus (formerly known as Inoculate IT PE)
(http://www.my-etrust.com) (The DOS program is part of the
Win9x/NT/2000 download)
- Grisoft AVG (http://www.grisoft.com) (The DOS program is part
of the Win9x download)
- Dr. Web (http://www.sald.com)
- Trend Micro PC-Cillin (http://www.trend.com) (The DOS program
is part of the Win9x download)
- Sophos Anti-Virus (Sophos Sweep) (http://www.sophos.co.uk)
Support for AVPLite has been taken out as of v8.1 due to memory and
scanning limitations and the fact that AVPLite is not developed
anymore.
Windows anti-virus programs are not supported because it's not
possible to boot Windows from a floppy.
3. Contents of the AVDisk zip file and safety measures
------------------------------------------------------
The AVDisk archive should contain the following files.
Name purpose
------------ ------------------------------------------------------
2FLOPPY.ZIP contains files for the bootdisk
AVDISK.DEF AVDisk configuration file
AVDISK.EXE main AVDisk executable, sets up disks
AVDISK.TXT this readme file
INSTALL.EXE AVDisk installation program
LANGUAGE.RES language resources for AVDisk
QMS.EXE scans memory for viruses
QMS.INI keyfile for QMS.EXE
SETUP.BAT controls setup process
If a file is missing, if there were additional files in the
archive, if one of the programs reports that it has been modified
or if some files seem suspicious to you, do NOT use the program
any further. Instead, send us the complete archive and indicate
the download date and exact download location.
Please do NOT send us the complete archive if you simply discover
a bug in any of the programs. A bug report suffices.
See section 6, "Reporting a bug"
4. Creating rescue disks
------------------------
It is important that you create the rescue disks on a clean
computer; i.e. not the one which is infected.
To create rescue disks, you should run the setup.bat file by
entering its name at the DOS prompt, followed by [Enter]. You
can do this in a DOS box under Windows.
4.1 Memory scan
---------------
First, a memory scan will be performed to ensure that no virus
is lurking in memory. If the program finds a virus, don't panic!
Create the rescue disks on a clean computer and then scan the
infected computer.
4.2 Installation
----------------
If the memory scan completes successfully, an installation
program will be executed.
This programs searches your computer for supported anti-virus
programs and presents a menu that allows you to choose which
anti-virus program you wish to use. It does the same for the
necessary Pkzip/Pkunzip utilities.
It will then create a subdirectory and copy all necessary files to
that subdirectory. Eventually it will launch the actual AVDisk
program.
Note that you can do all of the above manually. For that you
need to create a subdirectory named avdisk in the directory that
contains the anti-virus program you wish to use.
Copy all files from the AVDisk package as well as pkzip and
pkunzip to that subdirectory. Then run avdisk.exe.
4.3 Creating the disks
----------------------
Under normal circumstances, AVDisk will be invoked automatically
by the setup program and should be able to create the rescue
disk set on its own. Just follow the on-screen instructions
guiding you through the creation process.
However, in some cases it might be necessary to launch
avdisk.exe manually. One of these situations might be the use of
a non-natively supported operating system. AVDisk can only show
its full functionality under operating systems which allow
creation of pure DOS bootdisks, i.e. Win9x systems.
As Windows NT/2000/ME do not provide this possibility, AVDisk
will only be able to update existing disks under these systems,
but not to create new sets.
If your computer runs on one of the aforementioned systems, you
will have to start AVDisk from the command line specifying at
least the parameters /nocheck and /updateonly (see below) to
make AVDisk update a disk set on these systems.
You may also specify the keyboard layout for the rescue disks on
the command line:
avdisk.exe /language:xx
where xx is one of the following:
us : US English
uk : UK English
gr : German
fr : French
it : Italian
sp : Spanish
Additionally avdisk.exe supports the following command line switches:
/forceupdate
Forces AVDisk to update disks even if the AVDisk versions do not match.
In that case AVDisk does not care whether there is already something
on the floppy.
/nocheck
Instructs avdisk.exe not to verify that all necessary files are present.
/tempdir:xyz
Instructs avdisk.exe to use the directory xyz as the temporary directory.
The default is the directory specified by the %temp% environment
variable.
/updateonly
Instructs avdisk.exe to switch to update only mode for users of
Windows 2000/NT/ME who have previously created rescue disks using
Windows 9x.
/windir:xyz
Tells avdisk.exe what the Windows directory is. The default is
the directory specified by the %winbootdir% environment variable.
/setlanguage:xyz
Switches the language AVDisk "speaks". If, for some reason, you want to
change the program language after the initial setup, use this switch.
Currently, you may replace xyz with either ENGLISH, FRENCH or GERMAN.
Do not mix this up with the /language switch, which only controls the
keyboard layout of the rescue disk.
5. Notes and hints
------------------
If you encounter problems with the installation program,
you can try to specify the "safe" command line parameter
when running either setup.bat or install.exe (without the
quotes). In that case, install.exe will search for anti-virus
programs only on drive C: and it will "behave" more cautiously.
The installation program will search for anti-virus programs
on CD-ROMs under Windows, however in such a case it is not
possible to choose an anti-virus program located on a CD-ROM
since CD-ROMs cannot be written to.
6. Reporting a bug
------------------
6.1 Known problems
------------------
Some Windows 98 users might experience hangs of AVDisk when it
copies files to floppy. At this time, it looks like this problem
is Windows-related. If it occurs on your system, try to use the
program in pure DOS mode. This should always work.
6.2 Send email
--------------
If you discover a bug, make sure you have the latest version
of the program as the bug may already have been fixed. See
"Credits" for the address of the official AVDisk home page.
If the bug still exists in the most recent version, send email to
quantensprung@gmx.net and fbonroy@mail.dotcom.fr
Bugs in QMS must be reported to Ralph Roth at RalphRoth@gmx.de
Please describe your problem and be as specific as possible:
- which version are you using?
- which program is causing trouble?
- which operating system are you using (name, version)?
- describe the symptoms and the circumstances under which the
bug occurs
Of course, you may also report spelling and grammar mistakes. ;-)
7. Credits
----------
The official AVDisk homepage is
http://www.avdisk.org
The official QMS homepage is
http://come.to/rose_swe
The following people are involved in AVDisk:
Digital56k - wrote the original AVDisk batch files
Deniz Oezmen - wrote SearchRD and the current avdisk.exe
Steven Craik - worked out AVPDOS32 support for AVDisk
Frederic Bonroy - wrote install.exe and this help file
Axel Pettinger - worked out support for NAI ScanPM
Ozzie Ostrich - helped inventing the update mode for W2K
Ralph Roth - wrote QMS and ENVINFO
Clay - tested AVDisk with EZ Antivirus
Robert Green - did a lot of testing on the startup system
Uzi Pat - solved a keyboard layout problem
8. Legal drivel
---------------
- This program is freeware and you are encouraged to distribute it.
You may NOT charge money for the distribution of AVDisk.
- You may NOT modify any of the files included in the AVDisk
archive and you may NOT distribute modified files.
- You may NOT distribute AVDisk together with malicious software
of any kind. This includes joke programs and virus construction
kits as well as virus creation documentation.
- You may distribute only the entire AVDisk archive; you may NOT
distribute single files. Likewise, you may NOT add files to the
AVDisk zip file.
- You agree to use this program at your own risk. It has been
tested thoroughly and contains no potentially dangerous code;
however malfunction can never be completely ruled out.
- The included program "qms.exe" is licensed for use in conjunction
with this software distribution only. You may not use it otherwise
or even distribute it without the AVDisk package. For detailed
information, see the QMS website (section 7).