Product Manual - Disc Drive SCSI-2/SCSI-3 Interface (Vol. 2; Ver. 2), Rev. E 175
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This command operates the same as the Write command (Section 5.2.1.5) except that in the CDB for this
command a four byte Logical Block Address and a two byte Transfer Length may be specified.
This command shall be terminated with a Reservation Conflict status if any reservation access conflict (see
Section 5.2.1.8) exists, and no data shall be written.
If any of the following conditions occur, this command shall be terminated with a Check Condition status and
the Sense Key shall be set as indicated in the following table. This table does not provide an exhaustive
enumeration of all conditions that may cause the Check Condition status.
Condition
Sense Key
Invalid Logical Block Address
Volume Overflow (see note)
Target reset since the last command from this initiator
Unit Attention
Note.
The extended sense information bytes shall be set to the Logical Block Address of the first invalid
address.
5.2.2.4
Seek Extended Command (2Bh)
Table 5.2.2-5a. Seek Extended Command
Bit
7
6
5
4
3
2
1
0
Byte(s)
0
0
0
1
0
1
0
1
1
1
Logical Unit No.[1]
0
0
0
0
0
0
0
0
2
Logical Block Address (MSB)
[2]
3
Logical Block Address
[2]
4
Logical Block Address
[2]
5
Logical Block Address (LSB)
[2]
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 [3]
The Seek Extended command requests that the disc drive seek to the specified Logical Block Address.
This command is implemented with the disc drive specific parameters listed in Table 5.2.2-5a
Notes.
[1] In the CDB, the LUN must be zero.
[2] This command operates the same as the Seek command (Section 5.2.1.6) except that a four byte Logi-
cal Block Address is specified.
[3] See “Control Byte” paragraph 4.2.6.
