Not sure if this is the right place. But I bought a used Mac air 2017. I did a erase and reinstall. When I did the erase it looked like nothing erased. I did it twice and thought it worked. It did to a point. It looks like a new reinstall but when I try to upgrade to Monterey after it downloaded said it don’t have enough space. I have 128 and only 9 gb left . It has nothing on it but a new install. Should it not be like 56gb used and he rest free? It’s like nothing erased. I’m lost. Need help thanks.
