bonjour
En attendant voici mon sources list , je vais voir les liens pour la méthode de passage...merci de vos réponses.
# deb cdrom:[Debian GNU/Linux 10.4.0 _Buster_ - Official amd64 NETINST 20200509-10:25]/ buster main
# deb cdrom:[Debian GNU/Linux 10.4.0 _Buster_ - Official amd64 NETINST 20200509-10:25]/ buster main
deb
http://deb.debian.org/debian/ buster main
deb-src
http://deb.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://deb.debian.org/debian/ buster-updates main
# deb-src
http://deb.debian.org/debian/ buster-updates main
# deb
http://deb.debian.org/debian/ buster main contrib non-free
# deb-src
http://deb.debian.org/debian/ buster main contrib non-free
# This system was installed using small removable media
# (e.g. netinst, live or single CD). The matching "deb cdrom"
# entries were disabled at the end of the installation process.
# For information about how to configure apt package sources,
# see the sources.list(5) manual.