Tests and Diagnostics

5) Partial read

This subtest reads 1GB data that is in minimum, middle and maximum address of the HDD area.

6) Write specified address

This subtest writes specified data to a specified cylinder and head on the HDD.

7) Read specified address

This subtest reads data, which has been written to a specified cylinder and head on the HDD.

8) Sequential write

This subtest writes specified 2-byte data to all of the cylinders on the HDD.

9) 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.

[ HDC Status ]

An error occurs during the HDD test, the following message is displayed. Note: For the serial ATA, this message is not displayed correctly.

HDC status = X X X X

HDC error register (P – 1f7h) HDC status register (P – 1f1h)

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[CONFIDENTIAL]

PORTEGE M780 Maintenance Manual (960-809)

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Image 292
Toshiba 960-809 manual HDC Status