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5.3 Host Commands
• SMART error logging
If the device detects an unrecoverable error during execution of a command
received from the host, the device registers the error information in the SMART
Summary Error Log (see Table 5.18) and the SMART Comprehensive Error Log
(see Table 5.19), and saves the information on media.
The host issues the SMART Read Log Sector sub-command (Features field = D5h,
Sector Number field = 01h, Sector Count field = 01h) and can read the SMART
Summary Error Log.
The host issues the SMART Read Log Sector sub-command (Features field = D5h,
Sector Number field = 02h, Sector Count field = 33h) and can read the SMART
Comprehensive Error Log.
Table 5.18 Data format of SMART Summary Error Log (1/2)
Byte(hex) Item
00 Version of this function
01 Pointer for the latest "Error Log Data Structure"
02 to 0D Forth last command data structure
0E to 19 Third last command data structure
1A to 25 Second last command data structure
26 to 31 Last command data structure
32 Device Control field value
33 Features field value
34 Sector Count field value
35 Sector Number field value
36 Cylinder Low field value
37 Cylinder High field value
38 Drive/Head field value
39 Command field value
3A to 3D
Error log data
structure
Command data
structure
Elapsed time after the power-on
sequence (unit: ms)
C141-E259 5-65