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Copyright © 2000 Toshiba corporation. All rights reserved.
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The failing LBA shall be the LBA of the uncorrectable sector that caused the test to fail. If the device
encountered more than one uncorrectable sector during the test, this field shall indicate the LBA of the
first uncorrectable sector encountered. If the test passed or the test failed for some reason other than an
uncorrectable sector, the value of this field is undefined.
10.8.33.6.11 Self-test index
The self-test index shall point to the most recent entry. Initially, when the log is empty, the index shall be
set to zero. It shall be set to one when the first entry is made, two for the second entry, etc., until the 22nd
entry, when the index shall be reset to one.
10.8.33.6.12 Data structure checksum
The data structure checksum is the two's complement of the sum of the first 511 bytes in the data
structure. Each byte shall be added with unsigned arithmetic, and overflow shall be ignored. The sum of
all 512 bytes is zero when the checksum is correct. The checksum is placed in byte 511.