Your situation has nothing to do with the original poster's situation. He is receiving a new box with Win10 installed. There is no previous operating system on the box to be found and reinstalled.
Uh, no. I my case it ‘found’ my Win7 installation on my SSD and reformatted it, deleting without asking all my other data on the SSD as well, then installed Win10 on hard drive over Win 8.
Your situation has nothing to do with the original poster’s situation. He is receiving a new box with Win10 installed. There is no previous operating system on the box to be found and reinstalled.
You are assuming facts not in evidence. The destruction of my SSD came with one of those 300+MB monthly rollups. You didn’t mention how much data usage will increase as Windows scrapes your computer and sends it back to MicroSoft as ‘performance’ data on top of those ‘rollup’ releases.