The only way the hub is "free wheeling" is when the caliper is off the car. Even then there is enough resistance in the wheel bearing to keep the rotor from spinning more than one turn. They are tight. Hardly anybody turns rotors anymore. Cheaper to just throw some China stuff on there instead of machining the old ones. You can "seat" new pads by driving in a rural area, about 40 MPH and hitting the breaks hard. Do this three or four times.

You are so way over your head. I did that once. Never again. I got the pistons crooked when I pushed them back. Everything had to be redone at great expense.

Best bet for brakes is to have some guy in the mountains fix them for you. Any mountain man who does his own brakes wrong can't stop, falls off the mountain, and dies. Only the good ones survive.

the front will not spin if the other side is on the ground due to the two axles indirectly connected through the trans. the rears should spin freely.

Raise the other tire off the ground. See, it spins now.

Ya

I have a 2002 Buick rust to hell over the past few weeks I thought my brakes were bad they or more like just the driver side was making a lot of noise started after some bad rain. Now I went to put on the new pads (both sides I know) on the driver side 1st but to much rust and I was over my head. But thought why not take a look around see what I see again a lot of rust real bad inside the rotor even the walls are clean and not warped but when I tried to spin the rotor I got only 2-3in both ways not a full or even half spin. Now what I heard and felt when driving right before this. 1st it was the normal squeak of needing new pads than no pop or Crack nothing it just sounded as if I was dragging something under the car I looked and seen nothing thats when I went to work changing the pads and seen what I seen.