Technical information

HGST Ultrastar C15K600 Hard Disk Drive Specification
94
18.4.3
Defect Descriptor
Three defect descriptor formats are supported. Entries are not required to be in ascending order. If an entry does not
correspond to a valid user addressable media location, the command terminates with Check Condition status with
the sense key set to Illegal Request and the additional sense code set to Invalid Field in Parameter List.
18.4.3.1
Block Format - 000b
Format of the Dlist sent during the data out phase when Dlist Format is Block format (000b) and FmtData is set to
one.
Table 66 Defect Descriptor - Block Format (for n + 1 defects)
Byte
Bit
7
6
5
4
3
2
1
0
0 - 3
(MSB)
Defective Logical Block Address
(LSB)
4n
4n+1
4n+2
4n+3
(MSB)
Defective Logical Block Address n
(LSB)
The Block format of the Dlist is the LBA of each defective sector.
Note: If a Defective LBA entry, when converted to a physical sector, is equal to the physical sector of a Plist entry
and DPRY = 1, then the entry is not added to the Glist.