Fujitsu MAT3300FC 用户手册

C141-C008 

6-1 

6.1 Defect 

Management 

6.2 

Disk Media Initialization 

6.3 

Data Block Verification Methods (Recommended) 

6.4 

Alternate Block Allocation Processing 

 

In this chapter, disk media defect management methods, treatment methods for 
media defects which occur during operation, reinitialization procedures and other 
disk media management methods are discussed.  Furthermore, see Chapter 3, 
"Data Format" in the "Product Manual" concerning details of the data recording 
format on the disk media. 

 

(1) Defect lists 

Information on the positions of defects in the disk media are managed by the 
types of defect list shown below.  See the description of the FORMAT UNIT 
command (Section 4.3.1) concerning methods for using the defect lists. 

•  P List  Defect position information at the point when the disk drive was 

shipped from the factory is recorded in this list.  The defective 
portions included in this list are permanent defects, and when the disk 
media is initialized, it is necessary that this list be used and alternate 
block processing be executed. 

•  D List  This list includes defect position information specified by the INIT in 

the FORMAT UNIT  command when initializing the disk media. 

•  C List  This list contains information on the positions of defective blocks 

detected during the data block Verify operation (Certification) after 
initialization by the FORMAT UNIT command.  This information is 
generated internally by the IDD when the FORMAT UNIT command 
is executed. 

•  G List  This list is composed from the defective logical data block position 

information specified by the INIT in the REASSIGN BLOCKS 
command, defective logical data block position information from 
alternate blocks which have been allocated by the IDD's auto alternate 
block allocation processing, information specified as the D List and 
information generated as the C List.