Enabling no-subscription repositories

Prepare

Preparations:Launch shell from hypervisor

• This should provide root shell (priviledged access), if not elevate

  sudo su
  

  Ensure Internet connectivity

ping download.proxmox.com

Prepare

sudoapt suupdate
apt install tmux

exit

tmux
sudo su

On Debian v13 (trixie)

mv /etc/apt/sources.list.d/pve-enterprise.sources  /root
mv /etc/apt/sources.list.d/ceph.sources            /root

Which version of Debian is running?

hostnamectl | grep -i debian

Create new file

nano /etc/apt/sources.list.d/pve-no-subscription.list 

repos

# for Debian GNU/Linux 13 (trixie)
deb http://download.proxmox.com/debian/pve trixie pve-no-subscription

close editoreditor, confirm changes (save)

CTRL+X, y

Adjust Debian repos

nano /etc/apt/sources.list.d/debian.sources 

verify repos

#
# for Debian GNU/Linux 13 (trixie)
#

Types: deb
URIs: http://deb.debian.org/debiandebian/
Suites: trixie trixie-updates
Components: main contrib non-free-firmware
Signed-By: /usr/share/keyrings/debian-archive-keyring.gpg

Types: deb
URIs: http://security.debian.org/debian-securitysecurity/
Suites: trixie-security
Components: main contrib non-free-firmware
Signed-By: /usr/share/keyrings/debian-archive-keyring.gpg

closeClose editoreditor, save

CTRL+X, y

Verify that repositories declarationdeclared properly

apt policy

another one:

Do APT update

apt update

List packages ready for update, most important that there are new packages from PVE repo.

apt list --upgradable

another one:

Perform upgrade (when needed)

apt upgrade

the another one