Sử dụng boot repair để cài ubuntu & linux chạy cùng nhau

Link: https://www.howtogeek.com/114884/how-to-repair-grub2-when-ubuntu-wont-boot/

$sudo apt-add-repository ppa:yannubuntu/boot-repair
$sudo apt-get update
$sudo apt-get install -y boot-repair
$boot-repair

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