CD-ROM SCSI-2 COMMAND REFERENCE MANUAL VERSION 3.1 (OB-U0077C)

TABLE 2-9-1B ERROR RECOVERY DESCRIPTIONS (CONTINUED)

Value

Description

21h

Only retries of the read operation and CIRC are used (layered error correction is not

used). Only CIRC unrecovered data errors are reported. If an CIRC unrecovered data

 

 

error occurs data transfer is terminated with Check Condition status. The block with

 

the error is transferred. The sense key is set to Medium Error. The information bytes

 

give the address of the block where the unrecovered error was detected. Recovered

 

errors are not reported.

 

 

24h

The maximum error recovery procedures available are used. Recovered data errors

are reported. If a recovered data error occurs data transfer is not terminated.

 

 

However, when the data transfer has completed Check Condition status is reported.

 

The sense key is set to Recovered Error. The information bytes give the address of

 

the last block where a recovered data error was detected. If a data error occurs which

 

is uncorrectable with the ECC information available on the media data transfer is

 

terminated and Check Condition status is reported. The block with the error is

 

transferred. The sense key is set to Medium Error. The information bytes give the

 

address of the block where the uncorrectable error was detected.

 

 

25h

Only retries of the read operation and CIRC are used (layered error correction is not

used). Recovered data errors are reported. If a recovered data error occurs, data

 

 

transfer is not terminated. However, when the data transfer has completed Check

 

Condition status is reported. The sense key is set to Recovered Error. The information

 

bytes give the address of the last block where an CIRC recovered data error was

 

detected. If an unrecovered data error occurs, data transfer is terminated and Check

 

Condition status is reported. The block with the error is transferred. The sense key is

 

set to Medium Error. The information bytes give the address of the block where the

 

unrecovered error was detected.

 

 

26h

The maximum error recovery procedures are used. Recovered data errors are

reported. If a recovered data error occurs, data transfer is terminated and Check

 

 

Condition status is reported. The block with the recovered error is transferred. The

 

sense key is set to Recovered Error. The information bytes give the address of the

 

block where the recovered data error was detected. If a data error occurs which is

 

uncorrectable with the ECC information on the media, data transfer is terminated

 

with Check Condition status. The block with the error is transferred. The sense key is

 

set to Medium Error. The information bytes give the address of the block where the

 

uncorrectable error was detected.

 

 

27h

Only retries of the read operation are used (layer error correction is not used). CIRC

recovered data errors are reported. If a CIRC recovered data error occurs, data

 

 

transfer is terminated with Check Condition status. The block with the recovered

 

error is transferred. The sense key is set to Recovered Error. The information bytes

 

give the address of the block where the recovered data error was detected. If an CIRC

 

unrecovered data error occurs, data transfer is terminated with Check Condition

 

status. The block with the error is transferred. The sense key is set to Medium Error.

 

The information bytes give the address of the block where the unrecovered error was

 

detected.

 

 

- 42 -