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6.2 INIT Error Recovery Methods (Recommended)
C141-C013 381
Table 6.6 Error recovery processing procedures (4/4)
Recovery
Method
Recovery Processing Procedure
19 Initialize the entire disk media surface. It is desirable at this time to increase the
number of spare sectors as much as possible. If this error occurs repeatedly, it
is necessary to perform alternate block allocation processing through the
system (shown in Chapter 7) or reconfirm the use conditions of the disk drive,
such as the installation environment.
20 1) Reissue the original command (Retry).
2) If it doesn't recover after 10 retries, perform recovery method 13.
21 1) Issue the MODE SENSE or MODE SENSE EXTENDED command and read
the "Current" values in the MODE SELECT parameters.
2) If the parameters' values are appropriate, reissue the original command.
Note This error could also be caused by a UNIT ATTENTION condition being
generated, caused by a programming error of another INIT, so when the
values in the parameters read in ( are illegal, recovery method 2 should be
performed, or the operations of the other INITs should be confirmed.)
24 1) Issue the READ or READ EXTENDED command and read the data for the
block where the error occurred.
2) Investigate the cause of the data not matching and perform data recovery
processing from the INIT.
25 Reissue the original command (Retry). It is desirable at this time to confirm the
operations of the other INITs.
26 1) Issue the LOG SENSE command and read the "Current" values of the LOG
SELECT parameters.
2) Search for any parameter values which exceed the threshold value or have
reached the maximum value, then issue the LOG SELECT command from the
INIT and perform resetting.
3) Reissue the original command.
27 1) Issue the INQUIRY command and read the operation mode information.
2) If the parameter values are appropriate, reissue the original command.
Note: This error could also be caused by a UNIT ATTENTION condition being
generated, caused by a programming error of another INIT, so when the
values in the parameters read in ( are illegal, recovery method 2 should be
performed, or the operations of the other INITs should be confirmed.)