Hi,

I am new to unraid. When I first setup my unraid environment I was reusing a 2 TB drive which was laying around in my desk. This is the only drive in my setup. I have it all up and running incl. nextcloud.

But today I realized that the 2 TB drive has 3 partitions from its former usage. And unraid is only using the first 1 TB partition. How can I reformat that drive to be one partition with the full 2 TB?

I do have a backup on a remote server. The backup was done with Appdata backup. The backup contains /mnt/user/appdata and /mnt/cache/appdata and the boot stick. I also have a backup of the nextcloud user data.

What do I need to do to get the full 2 TB?

Tool - New Config - Keep all - Apply

Then, click on that disk and "erase"

start array and reformat.

This does not work. I want the drive to have one partion which is XFS encrypted with keyfile. But every time I start formating it says at the end: umountable. Volume not encrypted.

I am lost here.

That suggests the key is missing, do you have a script or something deleting it? If not, reboot, try formatting the disk, and post the diagnostics.

The missing keyfile was a good hint. It is not sufficient to give the keyfile in the GUI (select a local file, like when first set it up). I needed to copy the keyfile manually to /root/keyfile. It works now. But is that a bug? It should be possible to provide the keyfile via GUI.

Now I am reinstalling container and restoring data and configs. Lets see how that goes.

Edited October 16, 2025Oct 16 by mabod

52 minutes ago, mabod said:

It should be possible to provide the keyfile via GUI.

It should be, unless something is deleting it after the array starts.