우분투(18.04) 설치 후 윈도우(Win10 pro) 설치(멀티부팅)

https://goodtogreate.tistory.com/entry/%EB%A9%80%ED%8B%B0%EB%B6%80%ED%8C%85-%EC%9A%B0%EB%B6%84%ED%88%AC-%EC%84%A4%EC%B9%98-%ED%9B%84-%EC%9C%88%EB%8F%84%EC%9A%B0-Install-Windows10-alongside-Ubuntu