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> To date I have never seen an ATAPI CD/DVD device that has a serial
> number.

Some CD/DVD devices support the "Logical Unit Serial Number" feature page
(accessible from the Get Configuration CDB).  Although the result is
supposed to be ASCII, a few early devices stored hex data.  Others support
the feature page, but don't return unique values.  Here is the CDB I use to
retrieve this information:

46 02 01 08 00 00 00 10 00 00

-------
Mike Berhan
busTRACE Technologies
807 Douglas Blvd., Suite 130
Roseville, CA  95678
916.768.3153 phone
916.218.6283 fax
http://www.bustrace.com


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