New Qube from ISO, Selecting Block Devices

I am trying to set up a new qube by booting from a Parrot Security iso and then installing. I was presented with this menu option to select the block devices. How would I know which block device is the appropriate one? How would I know if I could be in danger of overwriting any data?

Just install it to xvda: you should increase the size of that if you
wnat a full set of parrot tools.
Since this is a new qube, there’s no danger of overwriting any data.

If you want a parrot template, you can get one from