Defect Descriptor - Bytes From Index Format; Defect Descriptor - Physical Sector Format - IBM DCAS-32160 - Ultrastar 2.1 GB Hard Drive Specifications

Byte
7 6
0 (MSB)
1
2
3
4 (MSB)
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 set to one.
7.4.2.3 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 Bytes from Index
Defect Descriptor n
Bit
5 4 3
Cylinder Number of Defect
Head Number of Defect
Defective Sector Number
Defect Descriptor n
2 1 0
(LSB)
(LSB)
2 1 0
(LSB)
(LSB)
SCSI C O M M A N D SET
65