TS-251+ Want to create storage pool, but no hard disks show up

[Bilbo766]

TS-251+
Firmware: 5.0.0.1986
Harddrives (2x): WD Red 8TB 5400rpm (WD9-EFAX)

I was hit with the Deadbolt Malware and have decided to just wipe everything and start fresh. I have an external backup that I intend to restore from. I Restored Factory Defaults and Formatted All Volumes via the Backup/Restore function from Control Panel. I am now doing a clean setup and noticed that I had never setup Snapshots at all. Snapshots require a Storage Pool to be setup and that's where I hit a snag.

There is another post on here with a similar problem, but in his case his disks were setup as VJBOD which is not the case with me. That person did a full restore and that fixed the problem. Post here:
viewtopic.php?t=124327


I tried to create a new Storage Pool via the Wizard, but none of my disks show up as available. Screenshot:

Screenshot 2022-05-15 121902.jpg

Here are screenshots of my Volume:

Screenshot 2022-05-15 121835.jpg

A curiosity is that QTS is showing my volume as a "Legacy Volume". I'm not sure what that means and if that is why I can't create a Storage Pool

Screenshot 2022-05-15 123616.jpg

Somewhat network newbie. Any pointers would be appreciated. If any more info needed, please ask.

[Bilbo766]

Of course you spend hours on something and the moment you ask for help you figure it out.

Here it is the solution for posterity:
I had to remove the existing Volume first before a new Storage Pool could be created. Right click on Legacy Volume > Remove Volume