Self-Test Log Data Structure; Figure 150. Self-Test Log Data Structure - IBM IC35L040AVVN07-0 - 40GB IDE Deskstar 120GXP 7200RPM UATA-100 07N9682 Specifications

11.33.5 Self-test log data structure

The following figure defines the 512 bytes that make up the Self-test log sector. All multibyte fields shown
in these data structures are in byte ordering.
Description
Data structure revision
Self-test number
Self-test execution status
Life time power on hours
Self-test failure check point
LBA of first failure
Vendor specific
...
Vendor specific
Self-test log pointer
Reserved
Data structure checksum
Note: n is 0 through 20

Figure 150. Self-test log data structure

The data structure contains the descriptor of Self-test that the device has performed. Each descriptor is 24
bytes long and the self-test data structure is capable of containing up to 21 descriptors.
After 21 descriptors have been recorded, the oldest descriptor will be overwritten with a new descriptor.
The self-test log pointer points to the most recent descriptor. When there is no descriptor, the value is 0.
When there are one or more descriptors, the value is 1 through 21.
Deskstar 120GXP hard disk drive specifications
176
Byte Offset
2 00h
1 n*18h+02h
1 n*18h+03h
2 n*18h+04h
1 n*18h+06h
4 n*18h+07h
15 n*18h+0Bh
2 1FAh
1 1FCh
2 1FDh
1 1FFh
512