Help with Luks and an external hdd

[gregregre]

Hi,

what im trying to do:

https://squoo.sh/SHNIPS/ > LUKS Fastest way to randomise disk content

What I dont understand:

create a logical volume for demonstration; this would be entire device e.g. /dev/sda

Code: Select all

$ sudo lvcreate -L 1G -n demo VG_DATA

where is the path? if the unit I want to encrypt is /dev/sdb1, how do I edit that command to reflect this?

Do I have to encrypt /dev/sdb1 or just /dev/sdb?