Seagate SCSI Interface Product Manual page 100

86
The Defect Descriptors shall be in ascending order. The drive may return Check Condition if the defect descrip-
tors are not in ascending order. For determining ascending order, the Cylinder Number of Defect is considered
the most significant part of the address and the Defect Bytes from Index is considered the least significant part
of the address.
A value for Defect Bytes from Index of FFFFFFFFh (i.e., reassign the entire track) is illegal for the drive.
Table 47: Defect Descriptor Bytes—Physical Sector format
Byte
Number Description
0 Cylinder Number of Defect (MSB)
1 Cylinder Number of Defect
2 Cylinder Number of Defect (LSB)
3 Head Number of Defect
4 Defect Sector Number (MSB)
5 Defect Sector Number
6 Defect Sector Number
7 Defect Sector Number (LSB)
Information in this table is repeated for each defect.
For defects to be specified in the Physical Sector format, the Defect List format field (Byte 1, bits 2, 1, 0) must
be 101 (binary). See Tables 38 and 39.
Each Defect Descriptor for the Physical Sector format specifies a sector size defect location comprised of the
cylinder number of the defect, the head number of the defect, and the defect sector number.
The Defect Descriptors shall be in ascending order. The drive may return Check Condition if the defect descrip-
tors are not in ascending order. For determining ascending order, the Cylinder Number of the defect is consid-
ered the most significant part of the address and the Defect Sector Number is considered the least significant
part of the address.
A Defect Sector Number of FFFFFFFFh (i.e., reassign the entire track) is illegal for the drive.
SCSI Interface Product Manual, Rev. J