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Recover erased hard drive mac12/16/2023 This is by no means foolproof, and one should assume that there are forensic tools available that can reconstruct erased SSDs-some are for sale, but I haven’t tested their claims. SSD data can’t be trivially recovered because of how SSDs optimize storage to reduce wear and tear. If your Mac has an Apple-installed or third-party SSD, you can’t use Secure Erase, nor do you necessarily need it, as AppleĮxplains in a support document (see the note at the end). Select Disk Utility from the startup menu, and you can erase your startup drive securely. Restart a Mac and hold down Command-R after the startup chime sounds, and the computer boots into the recovery mode. Then you’d run Disk Utility to erase your startup drive. Securely erase your hard drive with Disk Utility.īefore Lion, you had to boot from a CD or DVD system disk or a third-party utility, like Disk Warrior, or from an external drive with OS X installed. Once is considered enough for regular purposes, while three and seven correspond to different U.S. When you select a volume in Disk Utility and then the Erase tab, you can click Security Options to pick how many times the drive is overwritten: once, three times, or seven times. That’s been built into Apple’s Disk Utility for years. To get rid of old data in a thorough fashion, you need use a multi-pass approach, in which every bit of storage in the disk is overwritten with new data (often zeroes).
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