Format Commands; Format Unit (04) - Fujitsu MAX3073NC - SCSI,80, Dell DC961,Hard Drive Scsi Logical Interface Specifications

The values specified in the "Logical block address" field and "Block count" field in the CDB are
disregarded and if any unwritten data exist in the data buffer, writing of all those data to the disk media is
performed.
If bit 1 of CDB byte 1, the "Immed (immediate) bit, is "1," a GOOD status is reported immediately at the
point when the legality of the CDB is confirmed and the command is terminated. If this bit is "0," a
GOOD status is reported at the point when writing of the unwritten data in the data buffer is completed
and the command is terminated.
3.3

Format Commands

3.3.1

FORMAT UNIT (04)

Bit
Byte
0
1
2
3
4
5
This command initializes (formats) the entire area of the disk media that can be accessed from the INIT
(User Space). At the same time, the IDD also implements defect management processing, allocating
alternate blocks for defective portions of the disk media in accordance with the specifications in this
command.
Furthermore, when the disk media is initialized with any of the following format attributes changed, the
INIT must issue the MODE SELECT or MODE SELECT EXTENDED command before issuing this
command and specify those format attributes in advance.
•
Logical data block length
•
Logical data block count
•
User space cylinder count
•
Spare sector count for alternate blocks
C141-C010
7 6 5
LUN FmtData CmpLst
0 0 0
Interleave factor (MSB)
Interleave factor (LSB)
0 0 0
3.3 Format Commands
4 3 2
X'04'
Defect List Format
0 0 0
0 0 0
1 0
0 0
0 Link
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