How to add a new passphrase to LUKS

If you have an existing LUKS partition, and you would like to add a new passphrase without needing to reformat anything or replace the existing passphrase, luckily it’s just a few commands. First, identify the LUKS partition using lsblk: lsblk Which should give you something like the following: NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS nvme0n1 ...