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PC-ZERO.DOC
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1984-04-02
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710b
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P C - Z E R O
PC-ZERO is a Security feature for zeroing files before Deleting them.
It must be remembered in MS-DOS or PC-DOS that Erasing a file DOES NOT
ERASE THE DATA on a diskette or hard disk - it merely removes the file
from the active directory. Files that are Erased or Deleted with PC-DOS or
MS-DOS leave the actual DATA of the file untouched and intact. Anyone
with a disk utility like the Norton Utilities can still read sensitive
data you thought you Deleted or Erased.
PC-ZERO erases all the data in a file as well as deleting it. Each
character of such a file will be filled with hexadecimal X'FF' bytes
[ or CHR$(255) ] before it is deleted thru DOS.