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Thread: How to change the disk encryption password

  1. #1

    How to change the disk encryption password

    I secured my data by setup disk encryption password on the installation wizard. Now I want to change it.

    How to change the existing disk encryption password?

  2. #2
    ab NNTP User

    Re: How to change the disk encryption password

    From my notes from my laptop which uses LUKS (I'm assuming your box does
    too) these steps exist:

    cryptsetup is the tool to do use.
    #First, verify device is LUKS device (returns zero, or add -v to be verbose):
    sudo /sbin/cryptsetup -v isLuks /dev/sda2
    #Now show used slots, just so we know what is going on:
    sudo /sbin/cryptsetup luksDump /dev/sda2
    #Next change the LUKS key for that device AFTER entering the prompted-for
    existing key for that slot
    sudo /sbin/cryptsetup luksChangeKey /dev/sda2 -S 0  #where zero is the
    target slot number, the first of eight total available
    Good luck.

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