Booting up from Windows 10, trying to delete windows 7 off old HDD
Every time I boot up windows it gives me the option to select one of the OS installed on my HDD/SSD. The Main OS(windows 10) is on the SSD I have in the first port on the mobo but i have an old windows 7 OS still installed on one of the old HDD plugged into another port. I was wondering if there was a why to bypass this or get rid of the old windows 7 backup OS from the other drive. The only information i've been able to get from windows is deleting the Windows.old files but that's not a thing for me since it's not on that disk.