I Can't Format My HDD

Hiya guys, I have 2 HDD's in my PC, one is a Windows 10 HDD and the other is just there for media files. I wanted to format my media drive, but it wont let me. It turns out when I installed Windows 10, it added the boot folders to the media HDD. No idea why.

I guess I need to somehow move these files to the Windows 10 HDD, so then it might let me format it? But I have no idea how to do this, and everything I have Google'd looks really hard, what's the easiest way to fix this? I just want my Windows HDD only, and format the other.

Welcome to the forum can you post a screenshot of your drives from disk manager so we can see what's going on. If you pull the power on the drive will Windows then not boot?

Sure thing, here you go,

Imgur: Disk Map

I just disconnected the Seagate drive (one I want to format) and it refused to boot the PC.

Ok I ran that program and it does indeed make the boot files on C:/ problem is they are still present on my Seagate, and I still can't format, it says cannot format as drive in use by system.

topgundcp said:

Open Admin Comand and type:
diskpart
select disk 1
clean
exit
Open Disk management then initialize, Create Simple partition, format.

This worked! Now doing a Format, thanks everyone in this thread your help has been superb!

Samuria said:

Welcome to the forum can you post a screenshot of your drives from disk manager so we can see what's going on. If you pull the power on the drive will Windows then not boot?

So i dont understand much of computers recently my hdd broke i bought a 2 tb new one and replaced it but when i did that i couldnt format my hdd and i wouldnt allow me to download anything on it i tried multiple things and now i cant even enter it i cant format it i cant do anything ill be glad if someone help me out https://gyazo.com/36b48fca8054b4ba736fd8e71d1e94b1 https://gyazo.com/8588461107871c7f7700975d7c3caac9