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Tests and Diagnostics
3-126 [CONFIDENTIAL] PORTEGE M780 Maintenance Manual (960-809)
The n-th offset is computed in the following formulas. X introduces the total number of
sectors of HDD.
1000
)2(21
2
1
2
2
log
1log
X
n
n
n
([x] The maximum integer that does not exceed x)
When it becomes (the completion of an HDD test of all the area), it returns to
initial offset after that.
■ Detail Mode
The area (%) which HDD tests are set up. The number of division is determined based on
this. When set up to 100%, the Sequential Read test over all the area of HDD is carried out.
When set up to 100%, the Sequential Read test over all the area of HDD is carried out.
Subject of examination :
The setting rate of all the HDD area (from a head address to LBA) (%)
1 time of reading size: 64 K bytes