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Hard disk drives store data magnetically on one or more platters, which spin at a rate of 4,000-10,000 revolutions per minute.
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Defective heads can be very quickly and easily diagnosed. The drive's logic initializes the read & write heads after the motor has reached the correct number of rotations. If they do not give the expected "READY" signal, the logic repeats this process again and again. This goes on until it receives a time-out.
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| In the picture to the right you see the read-write head of a hard drive as it appears under an electron microscope. This constant positioning produces a "clicking" (Wave File 73 KB) sound. To make it easy, we have prepared a WAVE file with a normal clicking noise. |
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If your hard drive should start making a scraping, metallic noise, this could lead to a "headcrash" (Wave File 2.7 MB). You can hear this noise whenever the read/write heads scrape over the damaged surface of a hard drive.
If your hard drive should sound like this, turn off your computer immediately! Contact our recovery team at once. Recovery programs cannot help you in this case because you do not have physical access to the drive anymore.
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