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2.3 Defect Management
C156-E227-01EN 2-11
(1) 128 MB media
The ISO/IEC10090 defines 128-MB media specification.
(2) 230 MB media
The ISO/IEC13963 defines 230-MB media specification.
(3) 540 MB/640 MB media
The ISO/IEC15041 defines 540 MB/640 MB media specification.
(4) 1.3 GB media
The Cherry Book version 1.0 defines 1.3 GB media specification.
2.3 Defect Management
2.3.1 Defect management schematic diagram
Defective sectors on the disk must be replaced with good sectors in accordance
with the defect management scheme as follows: Sectors found defective during
surface inspection are handled using a sector slipping algorithm. Sectors found
defective after initialization are replaced using a linear replacement algorithm.
Figure 2.2 shows the sector slipping and linear replacement algorithms.
(a) Sector slipping algorithm (b) Linear replacement algorithm
Figure 2.2 Algorithms for alternate processing