How to Uninstall a Linux Dual-Boot System From Your Computer
 

If you have installed Linux on its own partition in a dual-boot configuration, there’s no easy uninstaller that will remove it for you. You will need to delete its partitions and repair the Windows boot loader on your own.

How you uninstall Linux will depend on how you’ve installed it. If you installed Linux as your only operating system, you’ll have to reinstall Windows over Linux to get your Windows system back.

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