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Command Specifications
3 -
88
C141-E167
1. Delete the defect descriptors which precede the defect descriptor that specifies the logical block
address displayed in the “Command inherent information” field of the sense data from the defect
descriptor list specified in this command, and leave that defect descriptor in the list.
Logical block address that indicates the “Command inherent
information” field of the sense data.
XXXX
Defect Descriptor List
Delete
2. Change the “Defect List Length” in the header and add the new ”Defect descriptor list” corrected
in 1), then reissue the REASSIGN BLOCKS command.
3.3.3 READ DEFECT DATA (37)
Bit
Byte
76543210
0 X‘37’
1 LUN 00000
2 0 0 0 PList GList Defect List Format
300000000
400000000
500000000
600000000
7 Transfer Byte Length (MSB)
8 Transfer Byte Length (LSB)
90000000Link
This command transfers the list described in the defect position information of the disk media (defect
data) to the INIT.
There are two types of defect data, the P List (primary defect list) and the G list (grown defect list). The P
List indicates the defect position information at the time the disk drive was shipped from the factory. On
the other hand, the G List shows the defect position information specified from the INIT by the
REASSIGN BLOCKS command or automatic alternate block allocation processing, or when executing the
FORMAT UNIT command, or defective data block positional information from alternate block allocation
from Verify operation after initialization.
The INIT can specify the defect data type transferred to the INIT by the “P List (primary list)” bit
and “G List (grown list)” bit in the CDB and can specify the defect data format by the “Defect List
Format” field.