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Apple's built-in disk management utility for the mac. Erases, formats, and restores volumes and drives.

34 votes
3 answers
71k views

How to get the "securely erase" function of Disk Utility on El Capitan & Sierra

Up to Yosemite I regularly used Disk Utility with Erase > Security Options... > writes a single pass of zeros over the entire disk... as a simple method to fully check that a disk is fully safe before …
athena's user avatar
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