I was erasing my Macbook pro using disk utility and it is frozen? Help!?

Ok So I was erasing my macbook to restore it using the disk utility. When I clicked erase it began the proccess. It has been stuck staying unmounting disk for a few hours now and the mouse wont move. I am afraid to restart it because I dont want to mess up the process and destroy my computer. Can someone help?!

mac_daddy02,
if you’re trying to erase your Mac’s internal disk, what do you fear might be destroyed by interrupting the erasure?

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