BR is one part key exchange, one part manufacturing, one part firmware lockouts using that key. So if you mod a drive you probably could get raw data from the

BR is one part key exchange, one part manufacturing, one part firmware lockouts using that key. So if you mod a drive you probably could get raw data from the disc. The problem is getting that back out to a disc correctly that another unmoded player would like it. There are projects out there that are reading data right off the read head. But they are more focused on laserdisc items.