cryptsetup.md

more info: https://wiki.archlinux.org/index.php/Dm-crypt/Device_encryption

format the device

cryptsetup -v luksFormat /dev/sdx

dump header

cryptsetup luksDump /dev/sdx

map

cryptsetup luksOpen /dev/sdx name

zero (random data) fill

dd if=/dev/zero of=/dev/mapper/name bs=1M

create partition

mkfs.ext4 /dev/mapper/name

mount

mount -t ext4 /dev/mapper/name /mnt

unmount and close

umount /mnt cryptsetup luksClose