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Answer :
Final answer:
The most effective method for destroying data on HDDs from the choices provided is degaussing. Degaussing ensures complete data destruction by disrupting the HDD's magnetic field, thus neutralizing the magnetic charges that store data.
Explanation:
When it comes to securely erasing data from hard disk drives (HDDs), every method has its own level of effectiveness and practicality. Destroying the data on a HDD can be performed using several methods, but the most effective ones involve either physically destroying the drive or demagnetizing it. Drilling or using a hammer can be effective in physically damaging the drives, but these methods might not guarantee complete data destruction as some data might still be recoverable from undamaged parts of the platters. Moreover, for a large number of drives, this method can be time-consuming and unsafe.
A low-level format, often referred to as zero-filling, overwrites the data on the drive with zeros. While this makes the original data much harder to retrieve, with the right tools and expertise, some data might still be recoverable. It's important to note that modern HDDs may be protected against traditional low-level formats, rendering this method less effective.
The most effective method mentioned is degaussing. Degaussing uses a high-powered magnet to disrupt the magnetic field that stores data on the HDD. Since computer disks like HDDs record information using magnetic fields, degaussing effectively erases all data by neutralizing the magnetic charges. This is a quick method that ensures data recovery is virtually impossible, making it the ideal choice for mass data destruction.
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