_isover=18.04.1
ISONAME="$DISTRONAME ${_isover} amd64"
ISOURL="${_isover}/ubuntu-${_isover}-desktop-amd64.iso"
SHA256=5748706937539418ee5707bd538c4f5eabae485d17aa49fb13ce2c9b70532433

mirrorlist=(
https://mirrors.tuna.tsinghua.edu.cn/ubuntu-releases
http://releases.ubuntu.com
http://mirrors.ustc.edu.cn/ubuntu-releases
)