Performance Test

This test checks the performance of your hard disk by determining the data transfer rate and track-to-track seek time based on the transfer size, the seek count, and the amount of data transferred.

The program measures the data transfer rate in kilobytes per second. It reads 64KB of data 15 times and counts the number of timer ticks using this formula:

Transfer rate = (64KB x 15 x 18.2) /# timer ticks

The program measures track-to-track seek time in milliseconds using this formula:

Seek time = (# timer ticks x 1000) / 18.2 x 200

(The number of seeks is 200.)

A higher data transfer rate and a lower seek time indicate better disk performance.

Seek Test

This test checks the seek capability of the hard disk on the specified range of cylinders and heads. The program performs a series of sequential seeks followed by random seeks and reports any errors.

Read/Verify Test

This test checks the read and verify capability of the hard disk on the specified range of cylinders and heads. The program performs both sequential and random read and verify operations and reports any errors.

C- 18 Performing System Diagnostics