Fujitsu MAP3147NC/NP Manual do Utilizador descarregar pdf (Página 47)

C141-E166 3-13

Figure 3.7 Alternate block allocation by FORMAT UNIT command

If the data block verifying operation (certification) is not permitted (DCRT flag = 0) in the

FORMAT UNIT command, the IDD checks all initialized logical data blocks by reading them out

after the above alternate block allocation is made to initialize (format) the disk. If a defective data

block is detected during the check, the IDD allocates the alternate block to the defective data

block. This alternate block allocation is made by means of alternate sector treatment only like

processing by the REASSIGN BLOCKS command even if unused spare sectors exists in the same

cell.

: Unused spare sector

: Defective sector

: n represents a logical data block number

1 2 ... 42 43 44 45 46 47 48 49 50 51 52 ... 129 130

Sem comentários

Fujitsu MAP3147NC/NP Manual do Utilizador Página 47