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Toshiba Corporation Digital Media Network Company
Page 125 of 157
© 2005, Copyright TOSHIBA Corporation All Rights Reserved
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
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.
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 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
10.8.43.2.1 Error log version
The value of the SMART error log version byte is 01h.