The description below is from the book
by Everett Murdock Ph.D.
for information about downloading the book.
External (6.0 and later)
VSAFE [/option[+|-]...] [/NE][/NX][Ax|/Cx][/N][/D][/U]
VSAFE is a memory-resident program that continuously monitors your computer for viruses and displays a warning when it finds one.
The VSAFE memory-resident program uses 22K of memory. You should not use the VSAFE command when Windows is running.
/option[+|-] Used to specify how VSAFE will monitor for viruses. Use a plus sign (+) to turn an option ON and a minus sign (-) to turn an option OFF. Following is the list of options :
1 - Warns of formatting that could erase the hard disk (default is ON).
2 - Warns you that a program is attempting to stay in memory (default is OFF).
3 - Prevents a program from writing to disk (default is OFF).
4 - Checks executable files that are opened by MS-DOS (default is ON).
5 - Checks all disks for boot sector viruses (default is ON).
6 - Warns you of attempts to write to the boot sector or partition table of the hard disk (default is ON).
7 - Warns you of attempts to write to the boot sector of a floppy disk (default is OFF).
8 - Warns you of attempts to modify executable files (default is OFF).
/NE - Prevents VSAFE from loading into expanded memory.
/NX - Prevents VSafe from loading into extended memory.
/Ax - Sets the hot key as ALT plus a key specified by x.
/Cx - Sets the hot key as CTRL plus a key specified by x.
/N - Instructs VSAFE to monitor for viruses on network drives.
/D - Turns of checksumming.
/U - removes VSAFE from memory.
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