sudo tar -cvpzf "hamonikr7_$(date '+%Y%m%d%H%M').tar.gz" --exclude="/home/*/Downloads/hamonikr7_$(date '+%Y%m%d%H%M').tar.gz" --exclude=/swapfile --exclude=/lost+found --exclude=/proc --exclude=/tmp --exclude=/mnt --exclude=/dev --exclude=/sys --exclude=/run --exclude=/media --exclude=/var/log --exclude=/var/cache/apt --exclude=/home/*/.gvfs --exclude=/home/*/.local/share/Trash --exclude=/home/jin/Library --exclude=/home/jin/.config/google-chrome --exclude=/home/*/.cache/google-chrome --exclude=/home/*/.cache/mozilla --exclude=/home/*/.cache/mainline --exclude=/home/*/.cache/microsoft-edge-dev /

명령으로 백업해서 인터넷이 안되는 다른 PC에 파일을 풀어서 설치를 했습니다.

sudo tar -xvpzf /path/to/backup.tar.gz -C /media/whatever --numeric-owner

mkdir /proc /sys /mnt /media /cdrom /var /var/log/apache2 

mkdir /var/cache/apt/archives/partial #폴더가 없으면 실행

sudo mount /dev/sdXY /mnt

sudo mount /dev/sdXX /mnt/boot/efi

for i in /dev /dev/pts /proc /sys /run; do sudo mount -B $i /mnt$i; done

sudo chroot /mnt

grub-install --target=x86_64-efi /dev/sdX

update-grub