Removing LVM Encryption

**Thundara** · March 3rd, 2009

I've spent the past couple of days setting up an old computer to be a media box for the house, but while everything looks nice on the inside, I stupidly set a password for the LVM, so every time I start up, I require a monitor in order to enter the password. Is there any quick way I can remove this password and decrypt the partition if needed?

**Thundara** · March 5th, 2009

After looking into this a bit, I found myself presented with two options:

Create a new physical volume on the disc and transfer everything over, perhaps a bit too complex for a simple mind like mine
Use cryptsetup to remove the encryption on /dev/sda1, something I'm much more inclined to do since it hopefully would not involve moving tons of data around.

Does anyone have any suggestions on how to go about doing either? All help is appreciated

Edit: After a bit of time spent on this problem, I've found that the easiest solution was to go into:
/usr/share/initramfs-tools/scripts/local-top/cryptroot
and edit the line:

Code:

$cryptkeyscript "$cryptkey" | $cryptcreate --key-file=- ; then

to:

Code:

echo -n "PASSWORD" | $cryptcreate --key-file=- ; then

Which put the password straight into the decryption part of the code, rather than prompting the user. It's hackish, and I'd definitely like to say to remember to put "echo -n" so it doesn't mess it up and lock you out, but it works, which is what I was looking for.