5 -
8
C141-E039-01EN
(2)
Writing a Data Pattern
Write a data pattern for verification in the data block which is the object. The recommended
data pattern at this time is X '0123456789ABCDEF' repeated. The WRITE, WRITE
EXTENDED or WRITE SAME command can be used to write data.
(3)
Reading and Verification of Data
Issue the READ, READ EXTENDED or VERIFY command and verify that the data written to
the disk media in item (2) were read correctly.
To verify reading of data, it is recommended that reading of the same data block be done at
lease 2 times, but the number of times verification is performed is determined by the
conditions on the system. If reading of all data is completed normally, it can be recognized
that use of that data block can be used normally.
(4)
Error Verification
When an error related to the disk media (Sense Key = 3: MEDIUM ERROR) occurs during
writing of the data pattern (see item (2)) or verification of data reading (see item (3)), reexecute
the rewriting and reading verification combination (two times) at least 8 times.
When the same type of error occurs even once during reexecution, it is recommended that the
INIT treat that data block as a defective block. If the reexecution of verification is completed
normally every time, it should be regarded that that data block can be used normally.
