User's Manual

5.3 Host Commands
• Status
Bits 0 to 3: Indicates the drive status when received error commands according
to the following table.
Bits 4 to 7: Vendor unique
Status Meaning
0 Unclear status
1 Sleep status
2 Standby status
3 Active status (BSY bit = 0)
4 Off-line data collection being executed
5 to F Reserved
Table 5.19 Data format of SMART Comprehensive Error Log
Byte(hex) First sector Next sector
00 SMART Error Logging 01h Reserved
01 Index Pointer Latest Error Data Structure Reserved
02 to 5B
1
st
Error Log Data Structure
Error Log Data Structure 5n+1
5C to B5
2
nd
Error Log Data Structure2
Error Log Data Structure 5n+2
B6 to 10F
3
rd
Error Log Data Structure3
Error Log Data Structure 5n+3
110 to 169
4
th
Error Log Data Structure4
Error Log Data Structure 5n+4
16A to 1C3
5
th
Error Log Data Structure5
Error Log Data Structure 5n+5
1C4 to 1C5 Total number of drive errors Reserved
1C6 to 1FE Reserved Reserved
1FF Check sum Check sum
"n" indicates sector number in the Error Log. The first sector is 0.
• SMART Self-Test
The host computer can issue the SMART Execute Off-line Immediate sub-command
(Features field = D4h) and cause the device to execute a self-test. When the self-test
is completed, the device saves the SMART self-test log to the disk medium.
The host computer can issue the SMART Read Log Sector sub-command
(Features field = D5h, Sector Number field = 06h, Sector Count field = 01h) and
can read the SMART self-test log.
C141-E261 5-67