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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
Bit
Byte
0 - 3
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
Bit
Byte
0 - 2
3
4 - 7
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
Bit
Byte
0
1
2 - 3
4 - n
FORMAT UNIT Defect Descriptor-Block Format
7
6
5
FORMAT UNIT Defect Descriptor- Physical Sector and Bytes
From Index Format
7
6
5
FORMAT UNIT Initialization Pattern Descriptor-Data Format
7
6
5
IP Modifier = 0
4
3
Defective Block Address
4
3
Cylinder Number of Defect
Head Number of Defect
Defective Sector Number
or
Defect Bytes from Index
4
3
Reserved
IP Type
IP Length
IP
Maxtor Atlas 10K V
2
1
0
2
1
0
2
1
0
5-17
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