Mike wrote:

> Grab a formatted floppy, set the tab to open up
> the write protect switch (tab) and put it in drive
> A. If, after the magic 5 minutes, an error message
> pops up that there's a write error on drive A, you
> are probably the proud owner of a virus trying to
> write to the boot sector.

Boot viruses are kinda old now days... you used to trap Int 13h, 0301h,
BIOS write, and watch that... if it succeeded you know you could write
to the A: boot sector and not generate any write-protect error messages.
That's the method most viruses were using, but now nobody boots from
floppies any more, hardly.

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