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- Norton CrashGuard 1.0 (Freeware Edition)
- Release Notes
- Copyright 1996 Symantec Corporation
- All rights reserved
-
-
- Please read this document carefully; it contains important information
- about Norton CrashGuard.
-
-
- Deleting CrashGuard
- -------------------
- Please use the Add/Remove programs feature in the Windows Control Panel to
- remove CrashGuard from your system. If CrashGuard is unexpectedly deleted
- from your system, the system won't report program errors, but will just
- suspend the program and leave it that way until you use CTRL-ALT-DEL to
- close it. You can correct this problem by deleting the following registry
- key using regedit.exe:
-
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\aeDebug
-
-
- Disabling CrashGuard's Crash-Protection
- ---------------------------------------
- If you turn-off CrashGuard during a session, CrashGuard may continue to
- provide protection to some programs which have already encountered errors
- which it handled. Programs which have experienced no errors will not receive
- crash protection after CrashGuard is disabled.
-
-
- When does CrashGuard not catch a crash?
- ---------------------------------------
- Although CrashGuard catches every type of crash, it can not catch all crashes
- that occur in KERNEL32.DLL, VXDs, and certain device drivers.
-
-
- When does CrashGuard not fix a crash?
- -------------------------------------
- CrashGuard tries to fix every crash it intercepts, but it isn't always successful.
- Situations where a "recovery" may not be possible are:
-
- - the application crashes after it has corrupted its data
- - the application has entered a state and can not continue until the state is
- cleared the application is 16-bit and has destroyed its stack
-
-
- When does Anti-Freeze not work?
- -------------------------------
- As when fixing 32-bit crashes, Anti-Freeze can not help an application if:
-
- - it froze after corrupting its own data
- - it is waiting for a state that was never cleared
- - it is a 16-bit application that stopped processing messages
-
-
- How much memory does CrashGuard take?
- -------------------------------------
- CrashGuard is designed to be very transparent and lean.
- The 32-bit exception handler takes no memory when "idle," and about 84K when
- handling a fault.
-
- The 16-bit exception handler uses 36K.
- The application associated with the icon in the clock area uses 36K.
-
- - Grand total: 72K
-
-
- How safe is CrashGuard?
- -----------------------
- CrashGuard is extremely safe.
-
- As a "JIT (just-in-time) debugger," the 32-bit exception handler is only called
- when an exception occurs, so at worst, it can only crash an already-crashed
- application.
-
- The 16-bit exception handler is also very safe in that it performs no background
- activity, does not hook, and does not subclass it is only called by Toolhelp
- (part of Windows) when a crash occurs in a 16-bit application.
-
- The application associated with the icon in the clock area does nothing but
- bring up a menu when it is selected.
-
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-