HL-DT-ST is the infamous error-scanning-excluder, chronically.
The only drive I know to support error scanning partially is the BE14NU40:
- Only C2 support, C1 graph stays blank.
- First CU or POF error aborts the error scanning.
HL-DT-ST drives sometimes instantly finish error scanning without any scanning, sometimes give an SCSI error code. And when trying to retract the tray of a slim drive, which is mechanically only possible manually, TSST gives SCSi sense error 0x052000 while HL gives back nothing.
But what about new Panasonic and Pioneer drives? And other manufacturers?