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4.4 Various Processes
C156-E227-01EN 4-15
4.4.4 Data error detection criteria
Table 4.15 lists the ID and data error detection criteria for data access commands
and for error processing.
Table 4.15 ID and data error detection criteria and error processing details
Command ID read error Data error Error processing details
FORMAT UNIT 128/230 MB media: 3
read errors in 3 sectors
540/640 MB or 1.3 GB
media: 2 read errors in
2 sectors
4 or more bytes per
interleave
Defective sectors are
registered in PDL (Primary
Defect List). When there are
a large number of detective
sectors, the sectors are also
registered in SDL (Secondary
Defect List).
WRITE(10)
WRITE(12)
WRITE AND
VERIFY ERASE
128/230 MB media: 3
read errors in 3 sectors
540/640 MB or 1.3 GB
media: 2 read errors in
2 sectors
5 or more bytes per
interleave
(Inapplicable to the
ERASE command.)
Defective sectors are
registered in SDL.
READ(10)
READ(12)
Free of errors (If all
IDs could not be read,
repositioning
processing is
generated.)
9 or more bytes per
interleave
Responds with Check
Condition.
Sense Key indicates Medium
Error.
WRITE LONG 128/230 MB media: 3
read errors in 3 sectors
540/640 MB or 1.3 GB
media: 2 read errors in
2 sectors
No check Responds with Check
Condition.
Sense Key indicates Medium
Error.
READ LONG Free of errors (if all
IDs could not be read,
they are read using an
offset from the
preceding or
succeeding sector;
therefore, repositioning
processing is
generated.)
No check Responds with Check
Condition.
Sense Key indicates Medium
Error.
VERIFY 128/230 MB media: 3
read errors in 3 sectors
540/640 MB or 1.3 GB
media: 2 read errors in
2 sectors
9 or more bytes per
interleave
Responds with Check
Condition.
Sense Key indicates Medium
Error.