Optical Drive and Library SCSI-2 Command Reference

SCSI-2 Drive Command Set
Numerical List of Commands
Chapter 22-2
Numerical List of Commands
The following tables list the SCSI-2 commands numerically, by group.
Table 2-1 Group 0 Commands (6-byte command)
Code
(hex.)
Name Description Page
Number
00H Test Unit Ready Provides a means to check if
the logical unit is ready
2-8
01H Rezero Unit Moves the optical head to its
recalibration position
2-9
03H Request Sense Requests the detailed error
information
2-10
04H Format Unit Initializes the optical disk
(done only once for
unformatted Write-Once
disks)
2-15
07H Reassign Blocks Reassigns defective sectors 2-19
08H Read Reads data from the specified
logical block address
2-21
0AH Write Writes data to the specified
logical block address
2-23
0BH Seek Moves the optical head to the
physical track where the
specified logical block exists
2-25
12H Inquiry Reads the information
related to the controller and
the drive unit
2-26
15H Mode Select Sets optical disk, drive unit,
or controller unit parameters
2-31
16H Reserve Gains the exclusive control of
a specified logical unit
2-52