How to change LVM ENCRYPTED password ?

[Ozwark]

Hi,

I recently install Kali Linux with LVM. I encrypt my disk with a low password and i would like to change. How i can change this password ?
I follow this link : https://wiki.debian.org/LVM
But all commands doesn't work.

Any help ?
Thanks

[Alreten73]

Hi Ozwark,

I had the same problem than you, here my solution:

• List the content of the crypttab file to get the name of the partition:

cat /etc/crypttab

The result will look like this:

sda3_crypt UUID=e976dbf9-75d9-4e9a-b633-d1ecd6010130 none luks,discard

• In my case, the next step will be:

/sbin/cryptsetup luksChangeKey /dev/sda3

and it will ask you your current passphrase and the new one.

[Alreten73]

Hi Ozwark,

I had the same question than you, here my solution.

First, check which device is used:

# cat /etc/crypttab

sda3_crypt UUID=f2a99a6b-fab4-42a9-b481-c00fb1c607ed none luks,discard

Then, use this command:

# /sbin/cryptsetup luksChangeKey /dev/sda3

and it will ask you your current passphrase and the new one (twice).