Optical Drive and Library SCSI-2 Command Reference

SCSI-2 Drive Command Set
Request Sense Command (03H)
Chapter 22-12
Valid A Valid bit of 1 indicates the information field contains
valid information.
A Valid bit of 0 indicates that the information field does
not contain valid data.
Error Code An Error Code of 70H indicates that the CHECK
CONDITION status returned is the result of an I/O
process that returned CHECK CONDITION status.
An Error Code of 71H indicates that the CHECK
CONDITION status returned is the result of an error
occurring during a previous command that returned
GOOD status.
ILI An Incorrect Length Indicator bit of 1 usually indicates
that the requested logical block length did not match
the logical block length of the data on the medium.
Information If the Valid bit is set to 1, the Information Bytes contain
one of the following:
(1) The logical block address associated with the sense
key.
(2) The difference (residue) of the requested length
minus the actual length in bytes, as determined by the
command, when the ILI bit is set.
SKSV A Sense Key Specific Valid bit of 1 indicates that the
Sense Key Specific Information is valid.
A SKSV bit of 0 indicates that there is no sense key
specific information.
Sense Key Specific
Information If the Sense Key is set to 5-Illegal Request and the
SKSV bit is set to 1, the sense key specific field is
defined in Table 2-8 on page 2-13.
If the Sense Key is set to 2-(Not Ready) and the
Additional Sense Code/Additional Sense Code Qualifier
is set to 04/04-(Logical Unit Not Ready, Format in
Progress) and the SKSV bit is set to 1, the sense key
specific field is defined in Table 2-9 on page 2-14.