User Manual

SCSI Commands Reference Manual, Rev. J 215

www.seagate.com Direct Access Block commands (SPC-5 and SBC-4)

3.44 SEEK command

This command has been declared obsolete by the T10 committee. However, it is included because it may be implemented on

some products.

The Seek command (see table 185) requests that the disk drive seek to the specified logical block address.

For systems which support disconnection, the disk drive disconnects when a valid Seek command is received. The use of this

command is infrequent since all commands involving data transfer to/from the disk drive media contain implied seek addresses.

LUN (Logical Unit Number) field

Seagate drives only support Logical Unit Number 0.

LOGICAL BLOCK ADDRESS field

The maximum Logical Block Address that may be specified for a Seek command is defined in Read Capacity Data (see 3.22.1 and

3.23.1). See 2.2.3 for the definition of the LOGICAL BLOCK ADDRESS field.

CONTROL byte

The CONTROL byte is described in clause 2.2.7.

Table 185 SEEK command (0Bh)

Bit

Byte

7 6 5 4 3 2 1 0

OPERATION CODE (0Bh)

LUN MSB

LOGICAL BLOCK ADDRESS

LSB

Reserved

CONTROL