1.下载iso 常规配置 2.修改root密码 用root账号登陆 终端输入 sudo passwd root su root sudo vi /etc/pam.d/gdm-autologin 註釋行 “auth requied pam_succeed_if.so user != root quiet success” sudo vi /etc/pam.d/gdm-password 註釋行 “auth requied pam_succeed_if.so user != root quiet success” 3.换源 #命令 vi /etc/apt/sources.list 然后换个源 软件更