I add /etc/apt/sources.list :
# deb cdrom:[Debian GNU/Linux 9.1.0 _Stretch_ - Official amd64 NETINST 20170722-11:28]/ buster main #deb cdrom:[Debian GNU/Linux 9.1.0 _Stretch_ - Official amd64 NETINST 20170722-11:28]/ buster main deb http://ftp.fr.debian.org/debian/ buster main deb-src http://ftp.fr.debian.org/debian/ buster main deb http://security.debian.org/debian-security buster/updates main deb-src http://security.debian.org/debian-security buster/updates main # buster-updates, previously known as 'volatile' deb http://ftp.fr.debian.org/debian/ buster-updates main deb-src http://ftp.fr.debian.org/debian/ buster-updates main
