ATA Secure Command erase is a easy-to-use data destroy command, amounting to electronic data shredding. This operation completely wipes data from the drive. In truth, data may remain on the drive and require only moderate sophistication to extract. ATA Secure Erase When this command is given, an SSD will reset all its storage cells to empty, releasing trapped electrons and restoring the drive to its original state. “An SSD’s owner might apply a hard drive-centric sanitisation technique under the misguided belief that it will render the data essentially irrecoverable. “These differences between hard drives and SSDs potentially lead to a dangerous disconnect between user expectations and the drive’s actual behaviour,” comment the researchers. It is this copying that leaves insecure traces littered around the drive. The drive will remain locked but not frozen. When prompted for the password by Dell Security Manager, press Escape rather than entering it. Set the Internal HDD Password in the BIOS (be careful, the keymap is enUS / qwerty). Always double-check the contents of the drive after wiping. Reboot into the Dell BIOS by pressing F2 on startup. This creates a mismatch between where the ATA or SCSI drivers think the data is and where it physically resides which the drives compensate for by copying data around. Then a wipe-free space utility might be useful to make sure any sensitive data cant be recovered using any undelete style utilities. The core of the problem is that unlike magnetic media, SSDs save data to physical pages but erase from logical block addresses (LBAs), a process which is managed through a flash translation layer (FTL). As expected, the degausser had no effect on any of the drives. The team even tried a recommended NSA degaussing machine against the drives just to confirm that this technique does not work against flash memory cells. Without further ado, here are 5 bootable tools to securely wipe clean your SSD for macOS, Microsoft Windows, Linux and etc. USB drives fared poorly as well, with between 0.57 percent and 84.9 percent of data still accessible. If your drives are not displayed, select the View drop-down menu, and choose 'Show All Devices.' Image Credit: TechRadar Step two: Select the drive or volume you want to erase, and then press the. The results for wiping a single file from a SSD using a range of common sanitisation protocols were even worse, with between 4 percent and 75 percent of the data recoverable.
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