Insert Windows10 installation media and boot from it. . sudo add-apt-repository ppa:yannubuntu / boot-repair. Use a tool such as Etcher to write the Linux image to an SD card or a USB flash drive. . https://www. Step 3. When it does start up, a loading screen will appear. Clean Install Windows10. After few seconds, once it found Windows (10) bootloader, you will get the prompt again Run the program then go for this steps: - Add new entry - Linux/BSD - From Type choose: Linux(GRUB) or you can choose (GRUB 2.