Chapter 1
Chapter 2
Chapter 3
Chapter 4
Chapter 5
Chapter 6
Chapter 7
Chapter 8
Chapter 9
Chapter 10
Chapter 11
Chapter 12
Chapter 13
Chapter 14
Chapter 15
Chapter 16
Chapter 17
Chapter 18
Chapter 19
Chapter 20
Chapter 21
Chapter 22
Chapter 23
Chapter 24
Chapter 25
Chapter 26
Chapter 27
Chapter 28

Chapter 24

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A virus protection

One form of virus XE "virus"  is called a boot Sector virus.  The system design dedicates one sector of a floppy disk to contain the first minimal bootup program.  When the computer turns on, it may execute the program in this sector, to start bootup from a floppy.  If the floppy has a boot sector virus, it will transfer to the hard drive.  Then you get a message saying that is a non-system disk.  One protection is never to leave a floppy in your computer.  However, I know better, and do it frequently.  Newer computers can have the BIOS setup (beyond the scope of this book) set to that they will not attempt to boot from a floppy, which means that a virus cant transfer in this manner.  This precludes booting from a floppy, but if you cant boot from the hard drive, you probably need a technician anyway.


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Last modified: May 21, 2004