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Yes, it's internal SATA. The error from which all others spring is: Error 'Scsi error - ILLEGAL REQUEST:READ OF SCRAMBLED SECTOR WITHOUT AUTHENTICATION' occurred while reading 'DVD+R-DL PLDS DVD+-RW DU-8A5LH 6D1M' at offset '1048576' Which is clearly a decryption problem. This happens whether or not...

The cable was correctly installed by the factory.

These errors happen on mainstream movies but not on things like PBS documentaries and releases from non-major studios

For the large majority of disks I process, I get pages of this: Error 'Scsi error - MEDIUM ERROR:L-EC UNCORRECTABLE ERROR' occurred while reading '/VIDEO_TS/VTS_01_1.VOB' at offset '1867950080' Error 'Scsi error - MEDIUM ERROR:L-EC UNCORRECTABLE ERROR' occurred while reading '/VIDEO_TS/VTS_01_1.VOB'...