#define SCSI_CMD_COPY 0x18 // autonomous copy from/to another device
#define SCSI_CMD_ERASE 0x19 //
#define SCSI_CMD_MODE_SENSE 0x1a // read device parameters
-#define SCSI_CMD_START_UNIT 0x1b // load/unload medium
+#define SCSI_CMD_START_UNIT 0x1b // start or stop unit
#define SCSI_CMD_SCAN 0x1b // perform scan
#define SCSI_CMD_STOP_PRINT 0x1b // interrupt printing
#define SCSI_CMD_RECV_DIAGNOSTIC 0x1c // read self-test results
#define SCSI_ASC_COMMAND_PHASE_ERROR 0x4a
#define SCSI_ASC_DATA_PHASE_ERROR 0x4b
#define SCSI_ASC_MEDIUM_REMOVAL_FAILED 0x53 // w/ 0x4 it is failed, 0x5 is prevented
+#define SCSI_ASCQ_MEDIUM_REMOVAL_PREVENTED 0x02
#define SCSI_ASC_INSUFFICIENT_REGISTRATION_RESOURCES 0x55 // during persistent reservations
#define SCSI_ASCQ_INSUFFICIENT_REGISTRATION_RESOURCES 0x04
#define SCSI_ASCQ_ASYMMETRIC_ACCESS_STATE_CHANGED 0x06