Toshiba A100 VA3 - Satellite - Pentium Dual Core 1.6 GHz Maintenance Manual page 126

3.9 Hard Disk Test
Subtest 04 Cross talk & peak shift
This subtest writes eight types of worst pattern data (listed below) to a cylinder,
then reads the data while moving from cylinder to cylinder (to check the data
interference in the neighbor track) to compare. After the third pass, it tests the
motor-off function. (HDD motor is turned off, stops for 20 minutes and is turned
on.)
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 09 Sequential Write
This subtest writes specified 2-byte data to all of the cylinders on the HDD.
Subtest 10 W-R-C Specified Address
This subtest writes data to a specified cylinder and head on the HDD, then reads
the data and compares it to the original data.
PORTEGE A100 Maintenance Manual (960-460)
Worst pattern data
'B5ADAD'
'4A5252'
'EB6DB6'
'149249'
'63B63B'
'9C49C4'
'2DB6DB'
'D24924'
3 Tests and Diagnostics
Cylinder
0 cylinder
1 cylinder
2 cylinder
3 cylinder
4 cylinder
5 cylinder
6 cylinder
7 cylinder
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