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I would like to enlarge my encrypted LVM partition, because I gave my virtual machine Ubuntu 20.04 more hard disk space.

I tried to use Gparted, but it gave an error. I also tried the answer on How to expand an encrypted ubuntu partition with LVM, but sudo lvresize -l +100%FREE /dev/ubuntu-vg/root doesn't work, because /dev/ubuntu-vg/root doesn't exist.

How can I easily enlarge an encrypted partition?

4

I found a solution myself.

Live CD

Launch the live CD and use the option "Try Ubuntu".

Instal Partitionmanager

Make sure the universe software can be downloaded:

  • go to the Activities
  • launch Software & Updates
  • enable universe

Open the terminal and install the Partitionmanager:

sudo apt-get update
sudo apt-get install partitionmanager

Partitionmanager

See also the instructions here: http://e1z.ca/devlog/encrypted_partition_resize.html

Open the partitionmanger with sudo rights:

sudo partitionmanager

Right click on the encrypted volume and unlock.

Resize the partition. You might need to resize the vgubuntu on the left as well.

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