deb cdrom:[Lubuntu 19.04 _Disco Dingo_ - Release amd64 (20190416)]/ disco main multiverse restricted universe
deb http://old-releases.ubuntu.com/ubuntu/ disco main restricted universe multiverse
deb http://old-releases.ubuntu.com/ubuntu/ disco-security main restricted universe multiverse
deb http://old-releases.ubuntu.com/ubuntu/ disco-updates main restricted universe multiverse