Toshiba R100 manual Worst pattern data Cylinder

3 Tests and Diagnostics 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).

Worst pattern data	Cylinder
‘B5ADAD’	0 cylinder
‘4A5252’	1 cylinder
‘EB6DB6’	2 cylinder
‘149249’	3 cylinder
’63B63B’	4 cylinder
‘9C49C4’	5 cylinder
‘2DB6DB’	6 cylinder
‘D24924’	7 cylinder

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.

3-24 PORTEGE R100 Maintenance Manual (960-440)