Toshiba MK1032GAX 11.8.43.2 Extended Comprehensive SMART Error log, Byte, Byte, Descriptions, First sector, Subsequent sectors, 11.8.43.2.2 Error log index

	General Purpose Log Directory
Byte	Descriptions
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.

11.8.43.2 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 11.8.42.6.3, shall also be included in the Extended Comprehensive SMART error log with the 48-bit entries.

Extended Comprehensive SMART error log

Byte	First sector	Subsequent 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

11.8.43.2.1 Error log version

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

11.8.43.2.2 Error log index

The error log index indicates the error log data structure representing the most recent error. If there have been no error log entries, the error log index is cleared to zero. Valid values for the error log index are zero to 255.

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