Subtest 04 - Toshiba T4500 User Manual

Subtest 04

Cross Talk & Peak Shift
This subtest writes eight types of worst pattern data (shown below) to a cylinder,
then reads the data while moving from cylinder to cylinder.
Worst pattern data: B5ADADh, 4A5252h, EB6DB6h, 149249h, 63B63Bh, 9C49C4h,
2DB6DBh, D24924h.
Subtest 05 Write /Read/Compare (CE)
This subtest writes B5ADADh worst pattern data to the CE cylinder on the HDD,
then reads the data from the CE cylinder and compares it with the original data.
Subtest 06 Write Specified Address
This subtest writes specified data to a specified cylinder and head on the HDD.
Subtest 07 Read Specified Address
This subtest reads data which has been written to a specified cylinder and head on
the HDD.
Subtest 08 ECC Circuit
This subtest checks the Error Check and Correction (ECC) circuit functions of the
specified cylinder and head on the HDD.
Subtest 09 Sequential Write
3-28