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From: ts@cup.portal.com (Tim W Smith)
Newsgroups: comp.sys.mac.programmer
Subject: Re: How are some copy protections setup?
Message-ID: <33936@cup.portal.com>
Date: 15 Sep 90 08:45:25 GMT
References: <1990Sep13.111657.1@mel.cipl.uiowa.edu>
  <3428.26f0f12b@cc.curtin.edu.au>
Organization: The Portal System (TM)
Lines: 11

Re: copy protection schemes that put invisible files on the disk.

The invisible files probably contain information about which disk
blocks are occupied by the application.

One way around this sort of protection is to install the thing on
a dedicated disk partition.  For example, if the program is 500K,
make a 600K SUM partition, and install it there.  You can now
make copies by copying the partition.

					Tim Smith