I ripped a BD twice. The resulting ISOs do not match. Why? Warm Regards, Mark. PS: The ISOs are the same size, but MD5 checksums made from them do not match (which, of course, means that the ISOs have differing content). PPS: I could not directly compare the two 47GB files because even Total Commander has its limits. Besides that, even if I saw the differences, I wouldn't be able to interpret what the differences meant.