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READ.ME
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1997-02-06
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**************************************************************************
Norton AntiVirus Version 3.0 README.ME
Copyright (c) 1996 Symantec Corporation October 1996
**************************************************************************
Welcome to Norton AntiVirus!
This file contains information about Norton AntiVirus. To print this file
from the DOS prompt, type COPY READ.ME PRN: and press Enter.
General Program Information
* CREATING A RESCUE DISK SET
* AUTOMATIC PROTECTION ONLINE
* WARM BOOT TRAP
* INOCULATION FILES
* DOS ERROR LEVEL CODES
* "AUTOPROTECT SELF-TEST FAILED" ERROR
* FILES STATEMENT IN CONFIG.SYS
* SCANNING ZIP ARCHIVES
* AUTOMATIC PROTECTION AND MEMORY OPTIMIZATION
* AUTOMATIC PROTECTION MEMORY USAGE
* COMMAND-LINE SWITCHES
* SCANNING IN BATCH MODE / UNATTENDED SCANNING
* VIRSPEC.TXT
* SCHEDULING VIRUS SCANS
* RUNNING THE DOS SCANNER IN A STANDARD MODE DOS BOX
Compatibility Information
* MICROSOFT WINDOWS
* WINDOWS SCREEN SAVER AND SCHEDULER
* NEC
* AUTOMATIC PROTECTION AND UPDATING SOFTWARE
* AUTOMATIC PROTECTION AND COMPRESSED DRIVES
* BYPASS KEYS WITH MEMORY MANAGERS
* INSTALLING FROM WITHIN WINDOWS
* CONFIG.SYS
* NORTON ADMINISTRATOR FOR NETWORKS
* INSTALLING FROM AN OS/2 DOS BOX
**************************************************************************
General Program Information
**************************************************************************
***** CREATING A RESCUE DISK SET *****
You need three high-density floppy disks for the set, which will be
formatted as part of the process. Don't use floppy disks with files
you need to keep. The rescue set is composed of the following disks:
* Norton Rescue Boot Disk Starts your computer.
* Norton AntiVirus Program Disk Scans for and removes viruses.
* Norton AntiVirus Definitions Disk Stores the virus definitions
files used during scans.
To create or update your rescue disk set:
* At the DOS prompt, type RESCUE and press Enter.
Follow the prompts. You will be notified when to change floppy disks.
The entire procedure will take a few minutes. When the Norton AntiVirus
rescue disk set is created, follow the instructions on the screen to
label the disks, including the computer for which they were created
and the date the set was made. Write-protect the rescue disks and
store them in a safe place.
To write-protect 3 1/2 inch disks, slide open the plastic tab on the
back of the disk. To write-protect 5 1/4 inch disks, fold a small
piece of opaque tape over the write-protect notch on the side of the
disk. If you hold the disk in your left hand and look at the disk
label, the notch is about 1 1/3 inches below the upper-right corner
of the disk.
***** AUTOMATIC PROTECTION ONLINE *****
The Norton AntiVirus Automatic Protection TSR provides real-time
protection to prevent virus-infected files from being downloaded
from the Internet, bulletin boards, or other online services. If
this level of protection is not required, you can turn the protection
off by disabling the Scan on Open and Scan on Create options in the
Options - Auto-Protect Settings dialog box.
***** WARM BOOT TRAP *****
TSRs, device drivers, or programs that trap warm boots (Ctrl+Alt+Del)
may override Automatic Protection's ability to check for boot viruses
on floppy disks. Likewise, programs that perform a warm boot without
Ctrl+Alt+Del will bypass the automatic check for boot viruses.
***** INOCULATION FILES *****
The inoculation files are NAVSYS.DAT and NAVINOC.DAT. They are stored
in the NCDTREE directory by default.
***** DOS ERROR LEVEL CODES *****
In addition to the DOS error level codes listed in the "DOS Command-Line
Switches" appendix of the User's Guide, the following error code can be
returned:
Code Error
255 Scan Not Completed
This error occurs usually when there is not enough memory to load
Norton AntiVirus. 250K of memory is required.
***** "AUTOPROTECT SELF-TEST FAILED" ERROR *****
Although this error occurs in Windows, it is almost always caused by
insufficient free conventional memory. You need at least 475K of
conventional memory available before starting Windows. To check the
amount of conventional memory available, type "MEM /C" at a DOS prompt
before starting Windows. The value reported for "largest executable
program size" must be greater than 475K.
***** FILES STATEMENT IN CONFIG.SYS *****
Norton AntiVirus requires that FILES be set to at least 15 in your
CONFIG.SYS file. During install, NAV makes sure the FILES statement
in CONFIG.SYS is adequate for your hard disk boot. If you boot from
a floppy disk without this setting, Norton AntiVirus will fail to run
and display the following message: "The file NAV.EXE has been altered."
To boot from a floppy disk and be able to run Norton AntiVirus, make
sure the floppy disk contains a CONFIG.SYS file with at least a
"FILES=15" statement.
***** SCANNING ZIP ARCHIVES *****
The following limitations exist when scanning ZIP archives:
* Password protected files in a ZIP archive (stored with the
PKZIP -s option) are not scanned.
* Norton AntiVirus for DOS cannot scan ZIP archives with more than
about 1,000 files; the exact number of files depends on the
amount of available memory.
***** AUTOMATIC PROTECTION AND MEMORY OPTIMIZATION *****
The automatic protection TSR does not require memory optimization to use
UMBs efficiently. If you are planning to optimize memory, we recommend
doing so before installing Norton AntiVirus. If Norton AntiVirus is
already installed, remove automatic protection from CONFIG.SYS or
AUTOEXEC.BAT and reboot before running the optimization program.
Once the memory optimization is complete, add the command to load
automatic protection back to the appropriate file and reboot.
***** AUTOMATIC PROTECTION MEMORY USAGE *****
If your computer has a limited amount of memory available for the
automatic protection TSR, use the table below to determine
which options to turn off in order to reduce the amount of memory used.
Be aware that turning off options reduces protection.
The automatic protection options are in the Options - Auto-Protect
Settings dialog box and the Options - Inoculation Settings dialog box.
Option TSR size
5K 11K 15K 21K 34-64K
------------------------------------------------------------------
Run ON ON ON ON ON
Open OFF OFF OFF OFF ON
Create OFF OFF OFF OFF ON
Use Virus Sensor Technology OFF OFF ON ON ON
Low-Level Format of Hard Disk OFF OFF OFF OFF ON
Write to Hard Disk Boot Records OFF OFF OFF OFF ON
Write to Floppy Disk Boot Records OFF OFF OFF OFF ON
Write to Program Files OFF OFF OFF OFF ON
Read-Only Attribute Change OFF OFF OFF OFF ON
Check Floppies For Boot Viruses OFF ON ON ON ON
Upon Access
When Rebooting, Check Both Drives OFF ON ON ON ON
Alert Network Users ON ON OFF ON ON
Alert Norton AntiVirus NLM ON ON OFF ON ON
Inoculate Boot Records and ON ON ON ON ON
System Files
Inoculate Program Files ON ON ON ON ON
Inoculate Files on Floppies ON ON ON ON ON
NOTES:
* When using the 11K version of the auto-protect TSR, if a virus is
found when checking floppies for virus upon access or when rebooting,
you will only be notified. You can subsequently scan the floppy disk
to find and remove the virus.
* To install the 15K or 21K versions of the auto-protect TSR, you must
disable the Repair and Delete buttons in the "How To Respond" sections
of Auto-Protect and Inoculation. Repair and Delete must also be
disabled on the Auto-Protect Virus Sensor Settings dialog.
***** COMMAND-LINE SWITCHES *****
In addition to the command-line switches documented in the user's manual,
you can also use these:
/CLEAR -- Clears all entries from the activity log.
/EXPORT:filename -- Exports the activity log to a text file.
***** SCANNING IN BATCH MODE / UNATTENDED SCANNING *****
If you want to run Norton AntiVirus unattended so that it doesn't
pause when alert boxes appear, use the following procedure:
To customize Norton AntiVirus to run in batch mode:
1) Select one of the following options from the "When a Virus is Found"
drop-down list box in the Options - Scanner Settings dialog box:
"Notify Only," "Repair Automatically," or "Delete Automatically."
2) Check the "Immediate Notify" check box in the Scanner Advanced
Settings dialog box.
3) Check the "Remove Alert Dialog After" check box in the Options -
Alerts Settings dialog box, then enter 1 in the "Seconds" text
box.
NOTE: For more information on these options, see "Customizing Virus
Checking" in the User's Guide. For information on using command-line
switches, see the "Using Command-Line Switches" appendix in the User's
Guide.
***** VIRSPEC.TXT *****
This text file contains information about viruses that cause unique
problems and require special handling. Please refer to this file
(located in the directory where Norton AntiVirus is installed) for
information about the One Half virus.
***** SCHEDULING VIRUS SCANS *****
The User's Guide documents the procedure to schedule automatic virus
scans if Norton Desktop for Windows (NDW) is also installed. If NDW
is not installed, the following steps are different:
5) Make sure Run Program is displayed for the Type of Event.
6) Type a brief description in the Description text box.
7) In the Command Line to Run text box, type the Norton AntiVirus
command. See the Command-Line Switches appendix for complete
information. For example, to scan your hard drive, type:
NAVW C:
To scan more than one item, use spaces to separate them:
NAVW C: D:\APPS
8) Select how often you want the scan to occur in the Frequency
drop-down list.
9) Finish scheduling the scan by entering the correct time, day,
and date information.
Continue with step 12 of the printed procedure.
***** RUNNING THE DOS SCANNER IN A STANDARD MODE DOS BOX *****
In Windows 3.1 standard mode, you need to create a PIF file that allocates
XMS memory to run the Norton AntiVirus DOS Scanner in a DOS box. Please
refer to your Windows 3.1 documentation for instructions.
**************************************************************************
Compatibility Information
**************************************************************************
***** MICROSOFT WINDOWS *****
If you are prompted to inoculate a file while windows is loading and
your computer subsequently "hangs," type the following command at
the DOS prompt to inoculate the windows files:
C:\NAV\NAV /REFRESH C:\WINDOWS /S
If Norton AntiVirus is not installed in C:\NAV or Windows is not
installed in C:\WINDOWS, substitute the appropriate path.
After inoculating the windows files you can then load Windows.
***** WINDOWS SCREEN SAVER AND SCHEDULER *****
If your screen saver is not activating with Scheduler loaded,
select "Hide When Iconized" from the Scheduler Options menu. If
you don't want to hide the Scheduler icon, add the following
statement to the [Scheduler] section in the SCHEDULE.INI
file:
ICONTIME=0
The SCHEDULE.INI file is located in your Windows directory.
***** NEC *****
If your computer hangs when Norton AntiVirus checks the A: drive on a
warm boot, add the following statement to your CONFIG.SYS file:
STACKS=9,256
***** AUTOMATIC PROTECTION AND UPDATING SOFTWARE *****
If you have configured Norton AntiVirus to detect unknown viruses using
the Virus Sensor Technology feature, you may get unknown virus alerts when
installing or updating software. This does not necessarily mean the file
is infected with an unknown virus. The installation process may be
overwriting existing files or expanding compressed files, which may
trigger an alert.
***** AUTOMATIC PROTECTION AND COMPRESSED DRIVES *****
If you install Norton AntiVirus on a compressed drive and subsequently get
the error message "NAVOPTS.DAT file not found, default settings loaded,"
install automatic protection as a TSR. For instructions, see "Using
Automatic Protection as a TSR" in the User's Guide.
***** BYPASS KEYS WITH MEMORY MANAGERS *****
By default, pressing both ALT keys will bypass the loading of the
Auto-Protect feature of Norton AntiVirus. The memory managers, QEMM and
386MAX, also use both ALT keys to bypass their loading. If you are using
either of these memory managers, you may wish to modify the bypass keys
used by Norton AntiVirus. For instructions, see "Monitoring During
Startup" in the User's Guide.
***** INSTALLING FROM WITHIN WINDOWS *****
The Norton AntiVirus installation program cannot be used within a Windows
DOS box. You must exit Windows and install directly from DOS.
***** CONFIG.SYS *****
The FILES statement in your CONFIG.SYS file should be set to a minimum
of 15.
***** NORTON ADMINISTRATOR FOR NETWORKS *****
If you are using the License Metering feature of Norton Administrator for
Networks, turn off the "Use UNC Path Names" option in the License Metering
Configuration screen. This ensures maximum compatibility with Norton
AntiVirus.
***** INSTALLING FROM AN OS/2 DOS BOX *****
Norton AntiVirus will not install properly from within an OS/2 DOS box.
To properly install in an OS/2 DOS box, run "INSTALL /NOMTC" for
"No Multitasking Check". This will bypass the Norton AntiVirus attempt
to check for a multitasking environment.
**************************************************************************
End of READ.ME File
**************************************************************************