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When the DCRT (Disable Certification) bit is 1, the ODD formats media without checking it.
When the IMMED (Immediate) bit is 1, the ODD responds with immediate end after the command
is received and before formatting is completed. At this time, during formatting, the Ready bit of
the Status register is set to 0, and then set to1 after formatting is completed.
Defect List Length must be 8. If any other value is set, the command responds with Check
Condition.
Table 4.43 Format descriptor
Bit
Byte
76543210
0-3 Number of Blocks
4 Reserved
5-7 Block Length
The values in the format descriptor must match the formattable descriptor to be reported to the host
with the READ FORMAT CAPACITIES command. If no value matches, the command responds
with Check Condition.
4.6.4 INQUIRY command
Table 4.44 INQUIRY command
Bit
Byte
76543210
0 Operation Code (12h)
1 Logical Unit Number Reserved
2 Reserved
3 Reserved
4 Allocation Length
5-11 Reserved
The INQUIRY command transfers device information to the host.
If the INQUIRY command is issued while the ODD contains the Unit Attention condition, the
ODD responds normally, but does not clear the Unit Attention condition.