So I just installed Windows 10 after 2 years of not having made a clean install, I have 3 disks: 1 SSD 240gb which is my old windows drive, 1 new SSD NVMe 500gb which I installed Windows 10 into and an HDD 1 Tb almost full of files. So heres what happened when I was at the windows 10 installation setup and it prompted me to choose which drive to install my windows in, before I chose my new 500gb SSD I selected my old one and pressed format thinking I should clean the old one as I will be using it as well. The result is my old SSD is now showing up as a partition in disk management and there are no options to set it. It does not let me format or delete volume as it says there are system files inside, it does not show up in My Pc with the other 2 disks. PLEASE help!