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4.3   Format Commands 
 
C141-C008 
4-167 
6.  The number of defects reported by this command differs depending on the 
defect data format. 
−  When data are in the “Block Address Format,” defect position 
information is not reported for portions which cannot be clearly accessed 
from the INIT. 
−  When data are in the “Block Address Format” or the “Physical Sector 
Address Format,” even if defects exist in multiple locations within that 
sector, that defect information is reported by one defect descriptor. 
−  When data are in the “Byte Distance from the Index Format,” all the 
registered defect positions are reported when the P List is reported, but in 
the case of the “Block Address Format” and the “Physical Sector 
Address Format,” the defect position information is not reported for 
defects which do not have an influence on data block read/write 
operations. 
−  When data are in the “Byte Distance from the Index Format,” when the P 
List is reported, multiple defect position information may be reported for 
a single sector, or 2 defective sectors may be reported as a single item of 
defect position information due to defects which extend across sector 
boundaries. 
 
7.  In defect data in the block address format, all the physical defect position 
information on the disk media cannot be described universally.  For example, 
defect position information in areas without block addresses (spare sectors, or 
cylinders which are not being used as User Space or CE Space) cannot be 
described.  The defect data in this format are provided in order to preserve 
continuity with previous specifications, but it is recommended that as much as 
possible, the INIT not use the “Block Address Format.”