az dd ubuntu 一直出错

apt update -y
apt install -y xz-utils openssl gawk file wget
bash <(wget –no-check-certificate -qO- ‘https://raw.githubusercontent.com/MoeClub/Note/master/InstallNET.sh’) -u 20.04 -v 64 -p "xxxxxxxx" -port "22"

出错后执行了这个命令也不行
mkdir /boot/grub2 && grub-mkconfig -o /boot/grub2/grub.cfg