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C141-E124-01EN 3 - 91
a. Header
The top of the format parameter transferred from the INIT is a 4-byte header. The INIT can
specify the method used for defect processing that is executed by this command by control
flags within the header.
x FOV (format option valid)
0: Indicates that the INIT does not specially specify concerning the functions specified
by the control flags in bits 6 to 4 of byte 1 (see following “DPRY” to “STPF”.). The
IDD executes format processing in accordance with the default values of the various
control flags. If the INIT specifies “0” in this bit, “0” must be specified in all the
control flags in bits 6 to 4 of byte 1.
1: Indicates that the INIT is clearly specifying the functions specified by the control
flags in bits 6 to 4 of byte 1 (see following “DPRY” to “STPF”.). The IDD executes
format processing according to the values specified in the various control flags.
x DPRY (disable primary): Default value: “0”
0: Specifies execution of format processing using the P List. Alternate blocks are
allocated as substitutes for sectors in which defects registered in the P List exist, and
logical data blocks are not positioned there.
1: Specifies use of the P List in defect processing. Even if this value is specified, the P
List itself is saved without being erased.
Note:
When the disk media is being initialized for normal operation, the P List must by all
means be used. Therefore, “0” should be specified in this bit.
x DCRT (disable certification): Default value: “0”
0: Specifies that data block verification be performed after initialization of the disk
media. The IDD confirms that all logical data blocks can be read from normally
after initialization is completed. Any defective data blocks detected in this verify
operation are registered as a C List and alternate blocks are allocated for those data
blocks.
1: Indicates that data block verify operations are prohibited after initialization of the
disk media.