Uploaded March 2025 | Updated September 2026, 2 weeks ago

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How To Install NixOS On Proxmox

NixOS is a declarative, reproducible, and atomic Linux distribution built around the Nix package manager. Unlike traditional Linux distributions, where system configuration is managed through manual changes and package installations, NixOS uses a declarative configuration file to define the entire system.

Why Use NixOS?
1️⃣ Declarative Configuration
Instead of manually installing packages and configuring settings, you define your system in /etc/nixos/configuration.nix.

2️⃣ Reproducibility & Rollbacks
Every system state is fully reproducible. You can set up a new machine exactly like the old one just by copying the configuration.

3️⃣ Atomic & Reliable Upgrades
Changes are applied atomically, meaning your system is never in an inconsistent state.

4️⃣ The Nix Package Manager
NixOS uses the Nix package manager, which allows you to install multiple versions of the same package without conflicts.

5️⃣ Stateless & Modular
Your system state is stored in a single configuration file, making it easy to back up and version control.

In this videos we gonna learn how to install NixOS with a minimal setup on Proxmox! This step-by-step guide covers everything from VM creation to post-install configuration.

Topics covered:
✅ Introduction
✅ Creating the Proxmox VM
✅ Configuring UEFI & Disk Setup
✅ Booting into NixOS Live ISO
✅ Partitioning & Formatting the Disk
✅ Installing & Configuring NixOS
✅ Setting Up the Bootloader
✅ First Boot & Final Tweaks


📌 Create partitions:
parted /dev/sda -- mklabel gpt
parted /dev/sda -- mkpart ESP fat32 1MiB 512MiB
parted /dev/sda -- set 1 esp on
parted /dev/sda -- mkpart primary ext4 512MiB 100%

📌 Format partitions:
mkfs.fat -F 32 /dev/sda1
mkfs.ext4 /dev/sda2

📌 Mount partitions:
mount /dev/sda2 /mnt
mkdir -p /mnt/boot
mount /dev/sda1 /mnt/boot

📌 Install NixOS:
nixos-generate-config --root /mnt
nano /mnt/etc/nixos/configuration.nix
nixos-install
reboot

Resources & Links:
nixos.org/manual/nixos/stable
nixos.org
proxmox.com/en














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#NixOS #proxmox #linux