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This article mainly introduces linux how to safely erase hard disk data, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let Xiaobian take you to understand.

Safely erase hard disk data

This paper introduces a method of erasing hard disk data, which is efficient and safe. You can easily do this through the dd command:

$dd if=/dev/urandom of=/dev/sda

Use / dev/urandom to generate random data and write the generated data to the sda hard disk, which is equivalent to safely erasing the hard disk data.

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