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Maxtor Atlas 10K V 5-17
5.8.2.2 FORMAT UNIT Defect Descriptor-Block Format
Each descriptor specifies a 4-byte defective sector address of the sector that contains
the defect as shown in Table 5-17.
Table 5-17 FORMAT UNIT Defect Descriptor-Block Format
5.8.2.3 FORMAT UNIT Defect Descriptor — Physical Sector and Bytes From Index Format
The Physical Sector defect descriptor specifies the location of a defect that is the length
of a sector. The Bytes From Index defect descriptor specifies the location of a defect
that is no more than eight bytes long.
Each descriptor is comprised of the bytes shown in Table 5-18. The Cylinder Number
of Defect is the most significant part of the address, and the Defective Sector Number
or Defect Bytes From Index is the least significant part of the address. A value of
FFFFFFFFh in bytes 4 to 7 is ignored
Table 5-18 FORMAT UNIT Defect Descriptor- Physical Sector and Bytes
From Index Format
5.8.2.4 FORMAT UNIT Initialization Pattern Descriptor
The Initialization Pattern option specifies that the logical blocks on the drive medium
will contain a specified initialization pattern. The Initialization Pattern descriptor is
sent to the drive as part of the FORMAT UNIT parameter list. Table 5-19 describes
the Initialization Pattern descriptors. The contents of the descriptor fields are described
in Table 5-20 and the types in Table 5-21.
Table 5-19 FORMAT UNIT Initialization Pattern Descriptor-Data Format
Bit
Byte
765 4 3210
0 - 3 Defective Block Address
Bit
Byte
765 4 3210
0 - 2 Cylinder Number of Defect
3 Head Number of Defect
4 - 7
Defective Sector Number
or
Defect Bytes from Index
Bit
Byte
765 4 3210
0 IP Modifier = 0 Reserved
1 IP Type
2 - 3 IP Length
4 - n IP