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5.1 Mode Parameters
h. DCR (disable correction)
"1": Even when a correctable data check has been detected, data correction
according to the ECC is prohibited.
"0": When a correctable data check has been detected, data correction
according to the ECC is applied.
The HDD disregards this bit and operates according to the default value (=0).
i. Read Retry Count
This parameter specifies the number of retries that should be executed for
"Data Check" type errors detected in read operations on the disk media. The
number of retries specified in this parameter is the maximum number of times
reading is retried for each individual portion of data in each logical data block.
If the HDD cannot perform correction of the data On-the-fly for each portion
of data in the data block, it retries the reading of those portions. The reread
retry is executed the number of times specified by the drive parameter
internally by the HDD before this retry is executed, so actually the retry is
executed the number specified here plus the number of internal retries.
The value specified in this parameter is applicable to the READ/READ
EXTENDED/READ LONG commands and the read test in the SEND
DIAGNOSTIC command.
j. Correctable bit length
This parameter indicates the burst error length (bit length) which it is possible
to apply data correction according to the ECC to. It is impossible to change
this parameter from the INIT. For information on the maximum capabilities,
see the Product Manual.
k. Head offset count (not supported)
The HDD is not supported this field. Therefore, the HDD ignores the
specified value in this field.
l. Data strobe offset count (not supported)
The HDD is not supported this field. Therefore, the HDD ignores the
specified value in this field.
m. Write Retry Count
This field specifies the maximum number of times writing of data to the disk
media is retried in the case that there has been an interruption in a write
operation such as a shock. The number of retries specified in this field is
applied to each logical block unit. When zero is specified in this field,
retrying of writing to the disk is prohibited.
The value specified in this field is applicable to the WRITE command,
WRITE EXTENDED command, WRITE SAME command, WRITE LONG
command, write operation in the WRITE AND VERIFY command, and write
test in the SEND DIAGNOSTIC command.
n. Recovery time limit (not supported)
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