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 |
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 |
… |
|
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
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
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 |
First error log data structure | Data structure 4n+1 | |
Second error log data structure | Data structure 4n+2 | |
Third error log data structure | Data structure 4n+3 | |
Fourth error log data structure | Data structure 4n+4 | |
Device error count | Reserved | |
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 versionThe value of the SMART error log version byte is 01h.
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