Jay,

Does anyone know how to calculate a new checksum for the DVD VTOC? Any help 
would be greatly appreciated.

I'm not an expert in this area, but looking at the scsi target driver:

http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/uts/common/io/scsi/targets/sd.c#5723

it appears the checksum is simply a xor of shorts.

-Artem.

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