Reparameterize geometry?

How can I reparameterize my geometry? I need a uv value of 0 to 1 so I can use an image sampler.
I have tried using a bounding box and surface closet point component, but it will not take it.

Right click any surface input or output and select reparameterize.


I understand that, but how can I easily make my geometry a surface?

Explode it