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Re: [Bug-xorriso] driver and disc ID acquiring, hidden track

From: Thomas Schmitt
Subject: Re: [Bug-xorriso] driver and disc ID acquiring, hidden track
Date: Fri, 30 Oct 2015 12:35:00 +0100


> We are to create one or some "bad tracks" on the media to prevent
> duplication. This approach has been proved to be feasible because I know
> there are some equipments employing it.

On DVD or BD media ?

> How can I add bad track on the disc or in the iso image using project
> libburnia, or other project?

I doubt that libburn can be of help, because it restricts itself
to SCSI commands which are specified by SPC-3, MMC-5, SBC-2.
For DVD and BD there is simply no provision for anything but
data blocks of 2048 bytes with automatic checksum and control bits.
I never explored the specified possibilities of "raw" CD writing
which would allow the burn program to manipulate the checksums
and control bits of the data blocks on CD media.

I assume you will have to look for a commercial provider of
copy protection. (Beware: they might make overly optimistic promises.)

Have a nice day :)


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