IBM Ultrastar 36LZX Specifications page 62

8.4.2.2 Bytes From Index format
Each defect descriptor for the Bytes From Index format specifies that the sector containing this byte be
marked defective. The defect descriptor is comprised of the cylinder number of the defect, the head
number of the defect, and the defect bytes from index.
Byte
7
6
(MSB)
0
1
2
3
(MSB)
4
5
6
7
8n -
8n +7
Figure 53. Defect descriptor - Bytes from Index format.
Format of the defect list sent during the data out phase when FmtData is set to one.
Bit
5 4 3
Cylinder Number of Defect
Head Number of Defect
Defect Bytes from Index
Defect Descriptor n
Ultrastar 36LZX hard disk drive specifications
2 1 0
(LSB)
(LSB)
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