hello guys,i was wondering if i have to uninstall bdts 2019 from windows 7 64 bit computer to upgrade to windows 10 64 bit from oem software disk.i do believe that will wipe had drive,so windows 7 will be gone.i do have back-up image if anything goes wrong.i only have 1 device open on my subscription and want to keep it open for another device,any advice would be very appreciated.