Won't install onto C:

Hello, I’m not able to install SC Remastered on my Windows 10 machine. have tried a few times, including after a restart.
I just sticks on the ‘calculating size’ screen forever.
My original SC is install onto C: (system drive)
I am attempting to install SC Remastered onto the C:

I’ve tried every on the ’ Troubleshooting Installation and Patching’ guide already.