CARRUTH@cc.utah.edu (01/10/91)
A quick scan of files located on many BBSs will reveal that many (if not all)
software methods for copy protecting a file or a disk can be readily broken.
On the other side of the coin, it seems to be very rare to find a program
which is designed to copy protect a file or a disk.
I'm interested in finding a program which will copy protect an EXE file. Since,
as is noted above, it is practically impossible to find a software method which
will copy protect a file against all attempts to unprotect it I'm only looking
for one which protects a file to this extent:
o The DOS (2.x, 3.x, 4.x) COPY command fails in copying the file
accurately
o The DOS (2.x, 3.x, 4.x) DISKCOPY command fails in copying the file
accurately
o But DOS (2.x, 3.x, 4.x) can read, load and run the EXE file -- or if
this is not possible, then let DOS transfer control to the program
which will then read, load and run the EXE file and then will remove
itself from memory when the EXE program has completed
Awhile ago someone sent me a MASM program called NOCOPY.ASM which effectively
wrote an invalid sector number on a track thereby stopping DISKCOPY in its
tracks from copying the disk. But I need something that goes one step further,
I need something that will also stop COPY from successfully copying the
protected EXE file.
If you have any suggestions please reply to my address below.
Thanks.
Brent Carruth
carruth@cc.utah.edu 10 January 1991