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100

101

SCSI-2 Drive Command Set

Mode Select Command (15H)

Chapter 22-34

Read-Write Error Recovery

AWRE An Automatic Write Reallocation Enable bit of 1

enables the automatic reallocation of defective sectors

during the write operation of the Write commands

(0AH, 2AH, AAH), Write and Verify commands (2EH,

AEH), and Write Long (3FH, DFH).

For rewritable disks, automatic reallocation of defective

sectors occurs during these additional erase operations:

Erase 2CH and Erase ACH.

NOTE AWRE cannot be disabled on Write-Once media.

TB A Transfer Block bit of 1 indicates that a data block that

is not recovered within the recovery limits specified is

transferred to the initiator before CHECK CONDITION

status is returned.

A TB bit of 0 indicates that such a data block is not

transferred to the initiator.

RC A Read Continuous bit of 1 indicates that error

correction codes are not used for data error recovery.

A Read Continuous bit of 0 allows the use of error

correction codes for data error recovery.

Table 2-30 Read-Write Error Recovery Page 01H

Byte 7 6 5 4 3 3 1 0

0 Reserved (0) Page Code (01H)

1 Page Length (0AH)

2 AWRE Rsvd

(0)

TB RC Rsvd

(0)

PER DTE DCR

3 Read Retry Count

4-7 Reserved (0)

8 Write Retry Count

9-11 Reserved (0)

1 2 ... 66 67 68 69 70 71 72 73 74 75 76 ... 377 378

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