🚀 go-pugleaf

Numerous ways exist to have a program attached to a particular hard
drive.
One of them assumes that during the installation process one of the
sector of the hard drive gets marked as being 'bad '.  In this case it
wouldn't get altered by other software or by the OS installed on the
computer. Next, a special key or a serial number information is stored
in this marked as 'bad' cluster and checked every time during the
protected program's startup (within the programm itself). If it's not in
this particular location, it's considered that the program was copied to
another hard drive.
That's very general overview, how it could be done.
Some technical details are omitted (such as having direct access to the
hard drive under NT would require a special device driver to work) still
implementing protection of that kind it's quiet feasible.

cheers,
o. petrovsky


Cliff Hulcoop wrote:
> 
> I work for a software house and they want to know if its possible to copy
> protect a program such that it will only work on one hard disk,i.e. a
> signature/serial on hard disks.
> 
> They assure me they did this many years ago in dos and wonder if its now
> possible to write code in windows to do this or any other way.
> 
> I have never heard of this and did not even think it was possible.  Any
> ideas?
> 
> Cliff
> p.s. it this is off topic i apologise but i did not know where to post this.