Error Log Sector; Figure 128. S.m.a.r.t. Error Log Sector; Figure 129. Error Log Data Structure - Hitachi IC25N040ATCS04-0 - Travelstar 40GN 40GB UDMA/100 4200RPM 2MB 2.5" IDE Hard Drive Specifications

13.32.4 S.M.A.R.T. error log sector
The following defines the 512 bytes that make up the S.M.A.R.T. error log sector. All multibyte fields
shown in these data structures follow the ATA/ATAPI-5 specifications for byte ordering.
Description
S.M.A.R.T. error log version
Error log pointer
1st error log data structure
2nd error log data structure
3rd error log data structure
4th error log data structure
5th error log data structure
Device error count
Reserved
Data structure checksum

Figure 128. S.M.A.R.T. error log sector

13.32.4.1 S.M.A.R.T. error log version
This value is set to 01h.
13.32.4.2 Error log pointer
This points to the most recent error log data structure. Only values 1 through 5 are valid.
13.32.4.3 Device error count
This field contains the total number of errors. The value will not roll over.
13.32.4.4 Error log data structure
The data format of each error log structure is shown below.
Description
1st command data structure
2nd command data structure
3rd command data structure
4th command data structure
5th command data structure
Error data structure

Figure 129. Error log data structure

Hitachi Travelstar 60GH & 40GN hard disk drive specifications
Byte
1
1
90
90
90
90
90
2
57
1
512
Byte
12
12
12
12
12
30
90
177
Offset
00h
01h
02h
5Ch
B6h
110h
16Ah
1C4h
1C6h
1FFh
Offset
00h
0Ch
18h
24h
30h
3Ch