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:
“You can write anything you want to,—a six-act blank verse, symbolic tragedy or a vulgar short, short story. Just so that you write it with honesty and gusto, and do not try to make somebody believe that you are smarter than you are. What’s the use? You can never be smarter than you are.”
—Brenda Ueland (1891–1985)