Physical Sector Format (101B) - IBM Ultrastar 36LZX Specifications

8.18.3 Physical Sector Format (101b)

Byte
0 (MSB)
1
2
3
4 (MSB)
5
6
7
Figure 120. Defect Descriptors of Physical Sector Format
The Defect List Format field specifies the format of the defect list data returned by the target.
The Defect List Length field specifies the length in bytes of the defect descriptors that follow. The Defect
List Length is equal to eight times the number of defect descriptors.
Normally the Target will set the Defect List Length field to the amount of space needed to contain the en-
tire defect list. However, the Target is capable of building a defect list with a length such that the entire
list cannot be transferred using the maximum allocation length. If the defect list grows beyond 8191 en-
tries, the defect data cannot be transferred with an allocation length of 0FFFFh. The Target will transfer a
partial defect list and return Check Condition status with the sense key set to Recovered Error and the
Additional Sense Code is set to Partial Defect List Transferred. The defect list length will be set to
0FFF8h, indicating the maximum number of defect descriptors which can be transferred. Defects beyond
this number can not be read by the initiator.
Defect Descriptors
Cylinder Number of Defect
Head Number of Defect
Defective Sector Number
Ultrastar 36LZX hard disk drive specifications
(LSB)
(LSB)
147