10.8.43.1 General Purpose Log Directory

The following table defines the 512 bytes that make up the General Purpose Log Directory.

 

General Purpose Log Directory
ByteDescriptions

0-1

General Purpose Logging Version

2

Number of sectors in the log at log address 01h (7:0)

3

Number of sectors in the log at log address 01h (15:8)

4

Number of sectors in the log at log address 02h (7:0)

5

Number of sectors in the log at log address 02h (15:8)

 

256

10h sectors in the log at log address 80h

257

00h sectors in the log at log address 80h

 

510-511

Number of sectors in the log at log address FFh

The value of the General Purpose Logging Version word is 0001h.

The logs at log addresses 80-9Fh shall each be defined as 16 sectors long.

10.8.43.2 Extended Comprehensive SMART Error log

The fpllowing table defines the format of each of the sectors that comprise the Extended Comprehensive SMART error log. The size of the Extended Comprehensive SMART error log is 64 sectors. Error log data structures shall include UNC errors, IDNF errors for which the address requested was valid, servo errors, write fault errors, etc. Error log data structures shall not include errors attributed to the receipt of faulty commands such as command codes not implemented by the device or requests with invalid parameters or invalid addresses.

All 28-bit entries contained in the Comprehensive SMART log, defined under section 10.8.42.6.3, shall also be included in the Extended Comprehensive SMART error log with the 48-bit entries.

Extended Comprehensive SMART error log

Byte

First sectorSubsequent sectors

0

SMART error log version

Reserved

1

Reserved

Reserved

2

Error log index (7:0)

Reserved

3

Error log index (15:8)

Reserved

4-127

First error log data structure

Data structure 4n+1

128-251

Second error log data structure

Data structure 4n+2

252-375

Third error log data structure

Data structure 4n+3

376-499

Fourth error log data structure

Data structure 4n+4

500-501

Device error count

Reserved

502-510

Reserved

Reserved

511

Data structure checksum

Data structure checksum

n is the sector number within the log. The first sector is sector zero

10.8.43.2.1 Error log version

The value of the SMART error log version byte is 01h.

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