Hi! To avoid boot virus problems in DOS, you could:
- use FDSHIELD to write-protect boot sectors in DOS
- configure your BIOS to write-protect boot sectors
- configure your BIOS to not boot from floppy etc.
Of course there are viruses which infect both files
and boot sectors. You can also configure FDSHIELD to
write-protect executable files, which is not nice if
you want to compile new executables :-p
And of course if you do boot from an infected floppy,
it will infect your other disks BEFORE you can load
FDSHIELD so only the BIOS can help you against that.
If you already have a virus, you either have to throw
away the infected files and SYS infected disks with
a non-infected boot sector or you have to use classic
methods like actual antivirus software ;-)
Note that a virus tends to stay in RAM after boot or
after you start an infected executable, so it would
immediately re-infect you after a SYS or similar. It
is a good idea to have a known-healthy write-protected
boot disk somewhere to be prepared for such cases.
Regards, Eric
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