Perform a Secure Erase of an SSD

Secure Erase: https://www.thomas-krenn.com/en/wiki/SSD_Secure_Erase

Over-Provisioning: https://www.thomas-krenn.com/en/wiki/SSD_Over-provisioning_using_hdparm

Advanced info: https://techgage.com/article/securely-erasing-your-ssd-with-linux-a-how-to/

More: https://grok.lsu.edu/Article.aspx?articleid=16716

You can use SystemRescueCD or other bootable gparted live system.

hdparm --security-erase NULL /dev/xxx

More info:

hdparm -I /dev/sdX                         #Displays all information about a drive
hdparm -I /dev/sdX | grep Model            #Displays the drive brand and model
hdparm -I /dev/sdX | grep frozen           #Displays whether drive is frozen (“not” is required)
hdparm --security-erase PASS /dev/sdX  #Simple command to secure erase a drive with no hassle