When you install Debian 11 using a DVD, the OS installer sets the DVD as the source for getting packages for your system if you didn’t choose to scan for network mirrors.
Due to this reason, the system would ask you to insert a DVD if the disc is not present in the DVD drive when you try to install any software. Also, the packages on DVD may not be the latest release. So, we need to get the packages from the Internet.
Media change: please insert the disc labeled 'Debian GNU/Linux 11.0.0 _Bullseye_ - Official amd64 DVD Binary-1 20210814-10:04' in the drive '/media/cdrom/' and press [Enter]
The /etc/apt/sources.list file with DVD as a source would look something like below.
# deb cdrom:[Debian GNU/Linux 11.0.0 _Bullseye_ - Official amd64 DVD Binary-1 20210814-10:04]/ bullseye contrib main deb cdrom:[Debian GNU/Linux 11.0.0 _Bullseye_ - Official amd64 DVD Binary-1 20210814-10:04]/ bullseye contrib main deb https://security.debian.org/debian-security bullseye-security main contrib deb-src https://security.debian.org/debian-security bullseye-security main contrib # bullseye-updates, to get updates before a point release is made; # see https://www.debian.org/doc/manuals/debian-reference/ch02.en.html#_updates_and_backports # A network mirror was not selected during install. The following entries # are provided as examples, but you should amend them as appropriate # for your mirror of choice. # # deb https://deb.debian.org/debian/ bullseye-updates main contrib # deb-src https://deb.debian.org/debian/ bullseye-updates main contrib
Debian 11: Official sources.list
To set up a Debian 11 official repository on your system, add/update the /etc/apt/sources.list file with the below details.
deb https://deb.debian.org/debian/ bullseye main deb-src https://deb.debian.org/debian/ bullseye main deb https://security.debian.org/debian-security bullseye-security main contrib deb-src https://security.debian.org/debian-security bullseye-security main contrib deb https://deb.debian.org/debian/ bullseye-updates main contrib deb-src https://deb.debian.org/debian/ bullseye-updates main contrib
Debian 11: Contrib & Non-Free
If you want to receive contrib and non-free packages for your system, use the below one.
deb https://deb.debian.org/debian bullseye main contrib non-free deb-src https://deb.debian.org/debian bullseye main contrib non-free deb https://deb.debian.org/debian-security bullseye/updates main contrib non-free deb-src https://deb.debian.org/debian-security bullseye/updates main contrib non-free deb https://deb.debian.org/debian bullseye-updates main contrib non-free deb-src https://deb.debian.org/debian bullseye-updates main contrib non-free
Debian 11: Backports
In case you want to add Backports, update the sources.list with the below information.
deb https://deb.debian.org/debian bullseye-backports main contrib non-free deb-src https://deb.debian.org/debian bullseye-backports main contrib non-free
Update
Once you have added the repositories, update the repository index.
sudo apt update
Conclusion
That’s All. I hope this post helped you add the required repositories on your Debian 11 system to get the latest packages from the internet.
