Optical Drive and Library SCSI-2 Command Reference

SCSI-2 Drive Command Set
Request Sense Command (03H)
Chapter 22-14
Progress
Indication The progress indication field value is a percent complete
indication in which the returned value is the numerator
that has 10000H as its denominator.
Internal Error
Code The Internal Error Code provides detailed information
about the failure.
Table 2-9 Progress Indication Field Bytes
Byte 7 6 5 4 3 2 1 0
15 SKSV
(1)
Reserved (0)
16 Progress Indication (MSByte))
17 Progress Indication (LSByte)