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3) If the REASSIGN BLOCKS command is terminated normally, verify that
logical data block according to the procedure in Section 6.3. If that data
block is judged to be correct, allocate an alternate block and terminate
processing. When the data block is judged to be defective, return to 2) and
issue the REASSIGN BLOCKS command again, then try reallocating another
alternate block for that logical data block.
The alternate block allocation history (defect position information) is registered as
an addition to the defect list (G List). Therefore, when reinitializing the hard disk
with the FORMAT UNIT command (see Section 6.2.2), if use of the G List is
specified, defect processing can be performed which reflects the operation results
up to that time. Also, since "Alternate sector processing" is applied in alternate
block allocation in the REASSIGN BLOCKS command, the physical connectivity
of the logical data block positions on the disk media is destroyed, but by
reinitializing the disk, as long as the number of defective sectors in the cylinder
does not exceed the number of spare sectors per cylinder, the logical data blocks
are relocated by sector slip processing so that their physical connectivity is
maintained.
C141-C009
6.4 Alternate Block Allocation Processing
6-9
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