mkdir ~/BACKUP_SYSTEM
sudo tar -jpcvf ~/BACKUP_SYSTEM/Ubuntu-16.04-20170128-home-z170ud3.tar.bz2 \
--exclude=/home/sj/BACKUP_SYSTEM \
--exclude=/proc \
--exclude=/lost+found \
--exclude=/sys \
--exclude=/mnt \
--exclude=/tmp \
--exclude=/media \
--exclude=/dev \
--exclude=/run \
--exclude=/boot \
--exclude=/home/sj/.cache \
--exclude=/home/sj/Downloads /

sudo tar -jpcvf ~/BACKUP_SYSTEM/Ubuntu-16.04-2061009-home-z170ud3-efi.tar.bz2 /boot/efi/EFI/ubuntu


watch -d -n 5 ls -alh ~/BACKUP_SYSTEM/
watch -d -n 5 ls -s --block-size=M BACKUP_SYSTEM


mkdir /tmp/root
mkdir /tmp/root2
mount /dev/sda1 /tmp/root
mount /dev/sda2 /tmp/root2
cd /tmp/root2/jiawzhang/BACKUP_SYSTEM/
sudo tar -jpxvf Ubuntu-16.04-2061009-home-z170ud3.tar.bz2 -C /tmp/root

efi boot

efibootmgr -c -w -L "BootOptionName" -d /dev/sda -p 1 -l\\EFI\\asianux\\elilo.efi