This is what I am doing currently # openssl enc -aes-256-ctr -pass pass:"$(dd if=/dev/urandom bs=128 count=1 2>/dev/null | base64)" -nosalt </dev/zero \ |

This is what I am doing currently # openssl enc -aes-256-ctr -pass pass:"$(dd if=/dev/urandom bs=128 count=1 2>/dev/null | base64)" -nosalt </dev/zero \ | pv -bartpes <DISK_SIZE> | dd bs=64K of=/dev/sd"X" To randomize the drive/partition using a randomly-seeded AES cipher from OpenSSL (displaying the optional progress meter with pv): https://wiki.archlinux.org/index.php/Securely_wipe_disk/Tips_and_tricks#dd_-_advanced_example https://wiki.archlinux.org/index.php/Securely_wipe_disk/Tips... Then I take out the drill press and make a bunch of holes.