Toshiba SATELLITE U200 manual Hdd

3 Tests and Diagnostics				3.13 Hard Disk Test
Subtest 04	Cross talk & peak shift
	This subtest writes eight types of worst pattern data (listed below) to a
	cylinder and then reads the data while moving from cylinder to cylinder.
	(Tests the data interference in the neighbor track.)
		Worst pattern data	Cylinder
		‘B5ADAD’	0 cylinder
		‘4A5252’	1 cylinder
		‘EB6DB6’	2 cylinder
		‘149749’	3 cylinder
		’63B63B’	4 cylinder
		‘9C49C4’	5 cylinder
		‘2DB6DB’	6 cylinder
		‘D24974’	7 cylinder
Subtest 05	Partial Read
	This subtest reads 1GB data which is in minimum, middle and maximum
	address of the HDD area.
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	Sequential write
	This subtest writes specified 2-byte data to all of the cylinders on the HDD.
Subtest 09	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.

3-28 [CONFIDENTIAL] PORTÉGÉ M500 Maintenance Manual (960-559)