Toshiba satellite a20 series Benutzerhandbuch

HARD DISK TEST     XXXXXXX 

SUB-TEST   : XX 

PASS COUNT : XXXXX   ERROR COUNT  :XXXXX 

WRITE DATA : XX      READ DATA    :XX 

ADDRESS   : 

XXXXXX 

 STATUS   :XXX 

The first three digits of the ADDRESS indicate which cylinder is being tested, the 
fourth digit indicates the head and the last two digits indicate the sector. 

The first digit of the STATUS number indicates the drive being tested and the last 
two digits indicate the error status code as explained in Table 3-4.  

Subtest 01 

Sequential Read 

This subtest is a sequential reading of all the tracks on the HDD starting at 
track 0. When all the tracks on the HDD have been read, the test starts at the 
maximum track and reads the tracks on the HDD sequentially back to track 0. 

Subtest 02 

Address Uniqueness 

This subtest writes unique address data to each sector of the HDD track-by-
track. The data written to each sector is then read and compared with the 
original data. There are three ways the HDD can be read: 

•  Forward sequential 
•  Reverse sequential 
•  Random 

Subtest 03 

Random Address/Data 

This subtest writes random data to random addresses on the HDD cylinder, 
head and sector. This data is then read and compared to the original data.