Post-Install: Basic Settings

Update and upgrade system

Reconfigures APT to use the free pve-no-subscription repository (instead of the enterprise repo that requires a subscription) and runs a full system upgrade. The exact steps depend on the Proxmox VE major version: ProxMenux detects it and dispatches to the right script.

The official Proxmox recommendation

Proxmox's own upgrade guidance is to run, in this exact order:

apt update && apt full-upgrade -y

That single line is all you need on any current Proxmox release. The challenge isn't the command itself — it's making sure the repositories on the host are sane before running it.

What the ProxMenux option does — verified against the script

The ProxMenux update wraps the exact apt commands above and adds a number of pre/post steps you would otherwise have to remember by hand. Every item below is what the dispatcher script actually does (see Proxmox System Update for the full breakdown):

• Repository hygiene first. Disables the enterprise pve-enterprise.sources / ceph.sources, removes legacy repo files left over from previous PVE versions, and writes a clean proxmox.sources pointing at the free pve-no-subscription channel (matching the host's Debian codename: trixie for PVE 9, bookworm for PVE 8).
• Debian repos rewritten with main / updates / security, including non-free-firmware, so the firmware warning during upgrade goes away.
• Runs the official upgrade. apt-get update followed by apt full-upgrade -y (PVE 9) or apt dist-upgrade -y (PVE 8), both launched non-interactively with --force-confdef --force-confold so any configuration files you customised stay yours.
• Installs essential packages if they are missing: zfsutils-linux, proxmox-backup-restore-image, chrony.
• LVM metadata sanity check. Looks for VMs with disk passthrough that may have scribbled stale physical-volume headers onto raw disks; warns if anything is off (no automatic fix).
• Cleans up afterwards: apt-get autoremove -y + apt-get autoclean -y, then prompts for a reboot if the kernel was updated or /var/run/reboot-required is present.

Synchronize time automatically

Detects the server's public IP via dig myip.opendns.com @resolver1.opendns.com, then queries ipapi.co/{ip}/timezone to look up the matching IANA timezone, and applies it with timedatectl set-timezone. Finally enables NTP with timedatectl set-ntp true.

# Manual alternative — pick your IANA zone
timedatectl list-timezones | grep -i europe   # e.g. Europe/Madrid
timedatectl set-timezone Europe/Madrid
timedatectl set-ntp true
timedatectl                                   # verify

Skip downloading additional languages

On every apt update, Debian by default pulls translation files for every locale it ships — a lot of traffic and disk space for something you'll rarely see. This option tells APT to only fetch the main metadata. Before disabling, ProxMenux makes sure the host's own locale is actually generated (reads /etc/default/locale or /etc/environment, appends to /etc/locale.gen if missing, and runs locale-gen). So you don't lose your shell locale as a side effect.

What gets written

# /etc/apt/apt.conf.d/99-disable-translations
Acquire::Languages "none";

Install common system utilities

Opens a checklist with 25 curated utilities organised into groups. Pick the ones you want, confirm, and ProxMenux installs each via apt, verifying the package worked and showing a summary at the end.

What's in the list

A few of them in action

# Remove a utility you no longer want
apt purge htop
apt autoremove --purge

Related

• Proxmox System Update — re-runs the apt update + dist-upgrade cycle on demand.
• System Utilities Installer — install (or re-install) utilities individually after post-install.
• Updates and Packages commands — apt reference.
• Customizable Post-Install — back to the parent menu.