How to restore grub booting when windows install wipes out the efi data for Fedora

I never like windows taking control of my computer so I would install both with Linux first unplug that drive and hook up a second drive then install windows as though it is alone. Then I would hook up booth and when I boot press the drive selector and boot the one I want. As far as data Linux can read the work files in windows directory and save to them if needed. In this way if I want windows games I can boot to windows and play the games. The Linux versions of the games are either limited or suck…so I play them in windows. We are talkin’ major 3d games…