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- *****************************************************************
- Norton AntiVirus for Windows 95 README.TXT
- August l995
- *****************************************************************
- Copyright (c) 1995 Symantec Corporation
-
- ***************************************************************************
- HOW TO USE THIS DOCUMENT
- ***************************************************************************
- To view README.TXT on screen in Notepad or WordPad, maximize the Notepad
- or WordPad window.
-
- To print README.TXT in Notepad or WordPad, choose Print from the File menu.
- If you use another word processor, select the entire document and format
- the text in 10-point Courier before printing to ensure proper spacing.
-
- To print README.TXT from the DOS prompt, type COPY README.TXT PRN:
-
- ***************************************************************************
- NORTON ANTIVIRUS NOTES
- ***************************************************************************
- This README.TXT file covers compatibility information, late-breaking news,
- and usage tips for Norton AntiVirus for Windows 95. The following topics
- are discussed:
-
- * VIRSPEC.TXT
- * Pre-release Versions of Windows 95 Software
- * Reinstalling Windows 95 and Inoculation Change Alerts
- * Windows NT and Norton AntiVirus for Windows 95
- * Windows 3.x or DOS and Norton AntiVirus for Windows 95
- * Earlier Versions of Norton AntiVirus (Windows 3.x and DOS)
- * NAVBOOT.EXE
- * AUTOEXEC.BAT and NAVBOOT.EXE
- * Command-Line Switch Enhancements (NAVBOOT.EXE and NAVW32.EXE)
- * Automatic Protection and Updating Software
- * Automatic Protection and Downloading Software
- * Auto-Protect (NAVAPW32.EXE, NAVAP.VxD, and SYMEVNT.386)
- * Scanning Compressed Archives
-
- VIRSPEC.TXT
- -----------
- In addition to README.TXT, Norton AntiVirus for Windows 95 provides a file
- called VIRSPEC.TXT, which is located in the folder where Norton AntiVirus
- is installed.
-
- VIRSPEC.TXT contains information about viruses that cause unique problems
- and require special handling, as well as statistics about recent virus
- outbreaks. Please refer to this file for important instructions about the
- One Half virus and other special cases.
-
- The VIRSPEC.TXT file is updated monthly by Symantec. The new version is
- distributed with an updated virus definitions file, which Norton AntiVirus
- uses to catch newly discovered viruses. See Chapter 8, "Keeping Up with
- New Viruses," in the User's Guide for information on how to get the
- updates.
-
- Pre-release Versions of Windows 95 Software
- -------------------------------------------
- To ensure safe operation, uninstall pre-release (or Beta) versions of all
- Windows 95 software products before installing Norton AntiVirus. This
- includes pre-release versions of other Symantec products, such as Norton
- Utilities for Windows 95 Preview or Norton Navigator, which you may be
- testing.
-
- Reinstalling Windows 95 and Inoculation Change Alerts
- -----------------------------------------------------
- If you are running Norton AntiVirus for Windows 95 and reinstalling
- Windows 95 (or upgrading from a beta version), you may receive more than
- one inoculation change alert. Choose Inoculate, not Repair, to respond to
- the alert.
-
- Windows 95 modifies boot records and system files during the install
- operation and restarts your system more than once. Each time your system
- is restarted, these changes are properly detected by Norton AntiVirus. If
- you choose Repair, you are undoing some of the changes that Windows 95 is
- making and, therefore, corrupting your system files. You may not be able
- to start your system from its hard disk. If this occurs, start up from a
- floppy disk and reinstall Windows 95.
-
- Windows NT and Norton AntiVirus for Windows 95
- ----------------------------------------------
- Norton AntiVirus for Windows 95 does not run on a Windows NT system.
- Symantec will soon release an AntiVirus product designed specifically
- for Windows NT.
-
- Windows 3.x or DOS and Norton AntiVirus for Windows 95
- ------------------------------------------------------
- Norton AntiVirus for Windows 95 does not run under Windows 3.x or DOS-only
- systems. Use Norton AntiVirus, Version 3, for Windows/DOS instead.
-
- Earlier Versions of Norton AntiVirus (Windows 3.x and DOS)
- -------------------------------------------------------------------
- Norton AntiVirus for Windows 95 is a new program for a new operating
- system. It is not an upgrade to previous versions of Norton AntiVirus.
-
- Unlike Windows 3.x and DOS, Windows 95 defines a standard installation
- folder for applications. For Norton AntiVirus for Windows 95, the default
- location is the C:\Program Files\Norton AntiVirus folder instead of the
- C:\NAV directory. During installation older versions of NAV are disabled
- (because they don't work with Windows 95), but are not deleted. If you
- boot into your old operating system, you need to use your old version of
- NAV instead. If you do not intend to use your old operating system, you
- can delete the old NAV directory to free up some disk space.
-
- The NAVINOC.DAT files (inoculation data stored in \NCDTREE) from earlier
- NAV versions are reused automatically.
-
- The NAVOPTS.DAT (options settings) and EXCLUDE.DAT (exclusions list) files
- from earlier NAV versions are compatible, but not reused automatically.
- Because the NAV implementation for Windows 95 is sufficiently different
- from older versions, you should, at the very least, review your settings
- to maximize protection. See "Determining Your Risk Level" in Chapter 4 of
- the User's Guide for specific suggestions. If, however, you want to reuse
- the options and exclusions files from earlier versions of NAV, simply copy
- them into your Norton AntiVirus for Windows 95 folder.
-
- If you maintain an older operating system and use an earlier NAV version
- as well as Windows 95, you must keep your virus definition files current
- for both versions. When you update your virus definition files (VIRSCAN.DAT
- and VIRSCAN.INF), copy them to both the old NAV directory and the new NAV
- for Windows 95 folder. See Chapter 8, "Keeping Up with New Viruses," in the
- User's Guide for information on how to get the updates.
-
- NAVBOOT.EXE
- -----------
- NAVBOOT is the Norton AntiVirus for Windows 95 component that performs
- startup scans as part of its regular operation, and scans in emergency
- situations after a virus alert system shutdown.
-
- NAVBOOT requires about 455K of free memory to load. If NAVBOOT won't load
- at startup or from your NAV Rescue Disk because there isn't enough memory,
- make sure HIMEM.SYS is loaded and remove any unnecessary drivers from your
- startup disk's AUTOEXEC.BAT and CONFIG.SYS files.
-
- AUTOEXEC.BAT and NAVBOOT.EXE
- ----------------------------
- During installation an entry is placed in your AUTOEXEC.BAT file to run
- NAVBOOT for startup scans, which run before Windows 95 starts (for example,
- @C:\PROGRA~1\NORTON~1\NAVBOOT.EXE /STARTUP). Whether or not the startup
- scan actually takes place is determined by your Startup tab settings in
- the Norton AntiVirus Options window. If, however, you remove the NAVBOOT
- line from your AUTOEXEC.BAT file, the startup scans can never occur,
- irrespective of your Startup tab settings.
-
- NAVBOOT is loaded from AUTOEXEC.BAT rather than WINSTART.BAT to ensure
- that it scans as early as possible during the system startup sequence.
-
- Command-Line Switch Enhancements (NAVBOOT.EXE and NAVW32.EXE)
- -------------------------------------------------------------
- The optional /S switch (Subfolders) for NAVBOOT.EXE and NAVW32.EXE has
- been enhanced. The /S switch now takes an additional parameter (+ or -)
- to indicate whether or not subfolders of the specified folder should be
- scanned as well.
-
- NAVBOOT pathname /S[+|-] If omitted, /S- is assumed and subfolders
- of the specified folder are not scanned.
-
- NAVW32 pathname /S[+|-] If omitted, /S+ is assumed and subfolders
- of the specified folder are scanned.
-
- The defaults are different for NAVBOOT and NAVW32 to facilitate the
- expected usages of the two programs.
-
- Automatic Protection and Updating Software
- ------------------------------------------
- If you configure 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 a file is
- infected with an unknown virus. As part of the process of installation and
- expanding compressed files you may be overwriting existing files, which
- will trigger an alert.
-
- To prevent these alerts, right click the Auto-Protect icon in the Windows
- taskbar tray and choose Disable to disable Auto-Protect temporarily before
- upgrading software. Afterwards, right click the Auto-Protect icon again
- and choose Enable. Be sure to scan all new files.
-
- Similarly, if you use inoculation protection for program files, NAV
- reports an inoculation change when the newly installed file is accessed
- (or during a manual scan). Choose Inoculate, not Repair, to respond to the
- alert. In this case, the inoculation change is legitimate because it is a
- new file.
-
- Automatic Protection and Downloading Software
- ---------------------------------------------
- If you configure Norton AntiVirus to monitor for virus-like activities or
- use the Virus Sensor Technology feature, you may get unknown virus alerts
- when downloading program files from some on-line services. These alerts do
- not necessarily mean a file is infected with an unknown virus. The alert
- may be generated due to the way the file is transferred.
-
- For example, the CompuServe WinCIM program creates a file the size of the
- expected download when you begin a file transfer. During the transfer, the
- contents of this file are replaced with the data being downloaded. If you
- are downloading an executable program, Auto-Protect will properly notice
- that the file is being modified and alert you.
-
- Simply select Continue when the alert is generated to complete the
- download. If you frequently download programs, you can add exclusions for
- this behavior so that the alerts are not generated at all. For example,
- you could add exclusions for WinCIM for "Unknown virus detection" and
- "Write to program files." See "Managing exclusions" in Chapter 10 of the
- User's Guide for directions.
-
- Auto-Protect (NAVAPW32.EXE, NAVAP.VxD, and SYMEVNT.386)
- -----------------------------------------------------
- Auto-Protect and Inoculation ignore disk label (volume label) changes
- to prevent false virus alerts. Viruses cannot use the disk label to
- infect your system. For the same reason, changes to the OEM ID in a
- boot record are not reported.
-
- By design, Auto-Protect does not report writes to a boot sector or master
- boot record if the new sector is identical to the one previously on the
- drive. For example, you may use a disk editor to write back the same data
- to a boot sector or master boot record.
-
- Scanning Compressed Archives
- ----------------------------
- Password protected files in PKZIP (ZIP) or LHARC (LHA or LZH) compressed
- archives are not scanned.
-
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- END OF FILE
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