IBM Ultrastar 36LZX Specifications page 63

8.4.2.3 Physical Sector format
Each defect descriptor for the Physical Sector format specifies a defect that is the length of a sector.
The defect descriptor is comprised of the cylinder number of the defect, the head number of the defect,
and the defect sector number.
Byte
7 6
0 (MSB)
1
2
3
4 (MSB)
5
6
7
8n -
8n + 7
Figure 54. Defect descriptor - Physical Sector format.
Format of the defect list sent during the data out phase when FmtData set to one.
Bit
5 4 3
Cylinder Number of Defect
Head Number of Defect
Defect Sector Number
Defect Descriptor n
Ultrastar 36LZX hard disk drive specifications
2 1 0
(LSB)
(LSB)
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