I'm upgrading from a single HDD to an SSD as my main drive and the old HDD will be backup storage. I installed windows 7 on the SSD and tried formatting the HDD to clean it out, but it won't work. I get errors saying that the disk is still in use and it cancels the process. I've tried diskpart, disk management, moving the page file to the SSD, reinstalling windows on both drives, and booting without the HDD plugged in but then I get an error saying the system can't find hardware.
The SSD is already my main boot drive but it absolutely refuses to let me reformat the HDD. Please, someone help me.