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101

SCSI-2 Drive Command Set

Read Defect Data (Group 5) Command (B7H)

Chapter 2 2-143

SCSI-2 Drive Commands

Defect List

Format This field specifies the Defect List Format that is

returned. Only the Physical Sector Format (5) is

supported. If the Block Format (0) is specified, the

defect list will be returned in Physical Sector Format

and a CHECK CONDITION status will be returned at

the completion of the command with the sense key/

additional sense code set to RECOVERED ERROR/

Defect List Not Available.

Allocation

Length Specifies the number of bytes that the initiator has

allocated for return of this data. A length of 0 indicates

that no data will be returned. This condition is not

considered an error. The drive will terminate the data

— in phase when the allocation length has been

transferred or when all defect data has been transferred

to the initiator, whichever is less.

PList A primary List bit of 1 indicates that the Primary List

of defects was returned.

GList A Grown List bit of 1 indicates that the Grown List of

defects was returned.

Table 2-128 Read Defect Data Defect List Header

Byte 7 6 5 4 3 2 1 0

0 Reserved (0)

1 Reserved (0) PList GList Defect List Format

2 Reserved (0)

3 Reserved (0)

4 Defect List Length (MSByte)

5 Defect List Length

6 Defect List Length

7 Defect List Length (LSByte)

1 2 ... 175 176 177 178 179 180 181 182 183 184 185 ... 377 378

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