Datasheet

Travelstar 80GN Hard Disk Drive Specification
174
13.38.5 Self-test log data structure
The following defines the 512 bytes that make up the Self-test log sector. All multibyte fields shown in these data
structures follow the ATA/ATAPI-5 specifications for byte ordering.
Table 120: Self-test log data structure
Note: N is 0 through 20
The data structure contains the descriptor of the Self-test that the device has performed. Each descriptor is 24 bytes
long and the self-test data structure is capable to contain up to 21 descriptors.
After 21 descriptors has been recorded, the oldest descriptor will be overwritten with the 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 descriptor(s), the value is 1 through 21.
Description Byte Offset
Data structure revision 2 00h
Self-test number 1 n*18h+02h
Self-test execution status 1 n*18h+03h
Life time power on hours 2 n*18h+04h
Self-test failure check point 1 n*18h+06h
LBA of first failure 4 n*18h+07h
Vendor specific 15 n*18h+08h
...
Vendor specific 2 1FAh
Self-test log pointer 1 1FCh
Reserved 2 1FDh
Data structure checksum 1 1FFh
512