Seagate ST3285N, Product Manual

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Bytes 2–5 The
logical block address specifies the logical block where
the write operation begins.
Bytes 7–8 The
transfer length specifies the number of contiguous
logical blocks of data to be transferred. A transfer length of
zero means that no logical blocks are to be transferred. Any
other value indicates the number of logical blocks to be
transferred.
3.5.4 Seek Extended command (2B
H
)
The Seek Extended command requests that the drive seek to the
specified logical block address. This command is the same as the Seek
command, except that the CDB includes a 4-byte logical block address.
The Seek command is described in Section 3.4.8.
Bit
Byte
7 6 5 4 3 2 1 0
0 0 0 1 0 1 0 1 1
1 LUN 0 0 0 0 0
2–5 Logical block address
6 0 0 0 0 0 0 0 0
7 0 0 0 0 0 0 0 0
8 0 0 0 0 0 0 0 0
9 0 0 0 0 0 0 Flag Link
ST3655 Family SCSI Drives Product Manual, Rev. A 65