said by StudioTech :

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Anyone who had a Commodore 64 back in the day will remember that disks were coded with errors deliberately to foil some copying software. The drawback to that was that the 1541 disk drive which most of us had back then would then literally bang it's read head against itself. Do that enough times, and it would either make the head go out of alignment or become disable altogether. This scheme sort of reminds me of that.

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