Accessing music on nvme hard drive

Ive just bought a raspberry pi 5 and a 52PI NVDigi hat. This uses a hifi berry digital optical connection but also has a feature to install an nvme ssd drive. I have a 256gb hard drive fitted to this.

I am unable to have Volumio scan this drive. Do I need to give it a particular name or partition it in a particular way for volumio to search for it?

Volumio knows it is there because it gave me the option of installing directly to this drive and booting from this, which worked but deleted the few music files I had stored and didn’t enable me to write them back onto it.

please try to label it as “ISSD” and make sure it has a proper partition table