Optical Drive and Library SCSI-2 Command Reference

SCSI-2 Drive Command Set
Write and Verify (Group 1) Command (2EH)
Chapter 22-90
Write and Verify (Group 1) Command (2EH)
Writes data to the optical disk and then verifies the write by reading the
written data and checking the error correction code.
NOTE The Mode Select Commands (15H, 55H) impact read, write, format, and
erase commands.
NOTE The 9.1 and 5.2 Gbyte capacity drives cannot Format, Erase, Write, or
Write and Verify 650 Mbyte and 1.3-Gbyte optical disks. The 2.6 Gbyte
capacity drives cannot Format, Erase, Write, or Write and Verify 650
Mbyte optical disks. If this command is issued with any of these drive/
media combinations, a CHECK CONDITION status will result with the
Sense Key/Additional Sense Code set to Data Protect/Write Protected.
NOTE For Write-Once media, Byte 9, Bit 7 and Bit 6 are reserved (0).
Table 2-79 Write and Verify (Group 1) Command CDB
Byte 7 6 5 4 3 2 1 0
0 Operation Code (2EH)
1 Reserved (0) DPO Rsvd
(0)
EBP Rsvd
(0)
RelAdr
2 Logical Block Address (MSByte)
3-4 Logical Block Address
5 Logical Block Address (LSByte)
6 Reserved (0)
7 Transfer Length (MSByte)
8 Transfer Length (LSByte)
9 PBA ErsCntl Reserved (0) Flag Link