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4.2.6
VERIFY (2F)
Bit
Byte
0
1
2
3
4
5
6
7
8
9
This command reads the number of continuous logical data blocks specified in the "Number of
Blocks" field, with the logical data block in the disk medium specified by the CDB's "Logical
Block Address" field as the logical data block header, and performs a Verify check.
The "Number of Blocks" field in the CDB specifies the number of data blocks which are
subject to the Verify check. When the specification in the "Number of Blocks" field is zero,
this command does not do anything but terminates normally (it does not perform a seek
operation).
When the specifications in the "Logical Block Address" field and "Number of Blocks" field in
the CDB exceed the maximum logical block address in the CDB, this command terminates
with the "CHECK CONDITION" status (ILLEGAL REQUEST [= 5] / Logical Block Address
out of Range [= 21-00].
The IDD disregards the specifications in Byte 1 to Byte 4 of the CDB.
(1)
BytChk Bit
This parameter specifies the Verify method.
1) If "0" is specified in "BytChk", the Verify check executed by this command is only an
ECC (data side) validity check. If the ECC (data area) is not valid at this time, this
command terminates with the "CHECK CONDITION" status (MEDIUM ERROR [= 3] /
xx/xx) (xx/xx differs depending on the contents reported for the error state).
7
6
5
0
0
0
Logical Block Address (MSB)
Logical Block Address
Logical Block Address
Logical Block Address (LSB)
0
0
0
Transfer Block Count (MSB)
Transfer Block Count (LSB)
0
0
0
C141-E054-02EN
4
3
2
X'2F'
×
0
0
BytChk
0
0
0
0
0
0
1
0
0
0
0
0
0
4 - 87
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