If in any unfortunate case you have to stop using Linux and only use Windows (😢), these is how to safely remove Linux from Dual boot with Windows, that I have found to work well: Caution! Do this at your own risk. If you are not certain of what you are doing, please consult an expert. Make a bootable Windows USB installation device or burn the ISO in a disk (why would you do that?). Insert the device and reboot. Make sure to boot from the device instead of the Hard disk. Go to Repair PC/Computer. Run the command prompt.