Converted Antipodes music server to Volumio help

I have an Antipodes Audio Gen1 DV2 4TB Music Server which I bought 2nd hand 2016 all going well until it wouldn’t record a CD and got stuck and would not work anymore.

I decided to remove the existing 120 gb ssd with the os on. I think it’s a vortexbox install.

I installed Volumio to the 120 gb and it all works now with line out to my amp.

There were 2 hard drives in the Antipodes; the 2TB was with the music files on which I could not access. So I formatted the drive to try and use it with my stored music.

But I cannot seem to be able to add an extra hard drive to play my stored music.

Is there a way to add an extra hard drive to my Volumio?

Please label the disks properly. “issd” or “ihdd”

Excuse my ignorance but how do convert hard drive either hdd or ssd?

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