Seagate STT8000A manual Locate command

Chapter 5ATAPI Interface

Locate command

Bit	7	6	5		4		3	2	1	0
Byte
0					Operation code (2Bh)
1				Reserved					CP	Reserved
2						Reserved
3	(MSB)
4					Logical Block Address
5
6										(LSB)
7						Reserved
8						Partition
9						Reserved

If the Change Partition (CP) bit is set, the drive first changes to the specified partition, then attempts to locate before the specified logical block. (All addresses are interpreted as logical.) A locate to Block 0 (in any partition) is treated like a rewind (to BOP)and does not start a read-ahead. Depending on the exact sequence of commands, LOCATE to Block 0 might or might not report a Blank Check error.

The DSC bit is reset (0) after this command is accepted and is set (1) when completed. REQUEST SENSE can then be used to verify successful command completion.

Page 42 STT8000A Product Manual