
SCSI-2 Drive Command Set
Write (Group 1) Command (2AH)
Chapter 22-84
Write (Group 1) Command (2AH)
This command is used to write data starting at the specified logical block
address.
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 2-76 Write (Group 1) Command CDB
Byte 7 6 5 4 3 2 1 0
0 Operation Code (2AH)
1 Reserved (0) DPO FUA 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 Ers Cntl Reserved (0) Flag Link
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