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+====  Securely erase an SSD with hdparm ====
+SSD drives need different way of erasing data. We will cover how to do this on Linux without proprietary software.
+<code bash>
+# show drive Infos and lock for "frozen" state!!! shoud be not frozen/locked
+hdparm -I /dev/sdb
+# if frozen, try the following:
+systemctl suspend
+# then, unsuspend. It should be "not frozen" after that
+# now, erase the data
+hdparm --security-set-pass NULL /dev/sdb # set the "NULL" password to UNLOCK the Controller
+hdparm --security-erase NULL /dev/sda # run secure erase!
+</code>
+Source: https://www.linuxonlinehelp.eu/ubuntu-debian-samsung-ssd-secure-erase-with-linux/

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