6.0 Physical format
Media defects are remapped to the next available sector during the Format Process in manufacturing. The
mapping from LBA to the physical locations is calculated by an internally maintained table.
6.1 Shipped format (P-List)
!
Data areas are optimally used
!
No extra sector is wasted as a spare throughout user data areas
!
All pushes generated by defects are absorbed by spare tracks of the inner zone
Figure 17. P-List physical format
NOTE: Defects are skipped without any constraint, such as track or cylinder boundary. The calculation
from LBA to physical is done automatically by internal table.
6.2 Reassigned format (G-List)
!
G-List is prepared for 1078 LBAs
!
Multiple reassignment of the same LBA does not increase G-List entry
!
A cylinder for spare sectors is prepared every 512 physical cylinders
NOTE: G-List entries are part of the normal maintenance work of hard disk drives. G-List entries are
possible during early drive usage and are caused mainly by handling.
Ultrastar 146Z10 hard disk drive specifications
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