The Write (6) command is only 6 bytes long and is a legacy from early SCSI days. Its use is restricted to 21-bit LBAs. The CDB structure is:
| bit→ ↓byte |
7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
|---|---|---|---|---|---|---|---|---|
| 0 | Operation code = 0Ah | |||||||
| 1 | Reserved | LBA | ||||||
| 2 | LBA | |||||||
| 3 | LBA | |||||||
| 4 | Transfer length | |||||||
| 5 | Control | |||||||
Read more about this topic: SCSI Write Commands
Famous quotes containing the word write:
“The artist doesn’t have time to listen to the critics. The ones who want to be writers read the reviews, the ones who want to write don’t have the time to read reviews.”
—William Faulkner (1897–1962)