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100

101

SCSI-2 Drive Command Set

Seek (Group 1) Command (2BH)

Chapter 2 2-87

SCSI-2 Drive Commands

Seek (Group 1) Command (2BH)

This command seeks the optical head to the physical track where the

specified logical block exists.

PBA A Physical Block Address bit of 1 indicates that physical

block addressing is used.

A PBA bit of 0 indicates that logical block addressing is

used.

NOTE When this command is used with 512 byte/sector 14X media or 1024 byte/

sector 14X media, setting the PBA bit will cause the drive to return a

CHECK CONDITION status. The sense key/additional sense code will be

set to ILLEGAL REQUEST/Invalid Field in CDB.

Table 2-77 Seek (Group 1) Command CDB

Byte 7 6 5 4 3 2 1 0

0 Operation Code (2BH)

1 Logical Unit Number

(0)

Reserved (0)

2 Logical Block Address (MSByte)

3 Logical Block Address

4 Logical Block Address

5 Logical Block Address (LSByte)

6 Reserved (0)

7 Reserved (0)

8 Reserved (0)

9 PBA Reserved (0) Flag Link

1 2 ... 119 120 121 122 123 124 125 126 127 128 129 ... 377 378

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