First, ensure your system is up to date:

sudo apt update
sudo apt full-upgrade -y

Install necessary packages:

sudo apt install -y debootstrap squashfs-tools xorriso grub2 mkresolutions

Phoenix LiteOS is a modified, "debloated" version of Microsoft Windows 11, designed from the ground up for performance, privacy, and low resource usage. The Ultralight Ultimate edition, specifically the version compiled by the developer FBConan, takes this philosophy to the extreme.

Unlike standard Windows 11, which requires a TPM 2.0, 4GB of RAM, and 64GB of storage, this custom ISO runs smoothly on hardware from 2007–2012. The -FBConan-.iso designation indicates it is an official release from FBConan himself—a well-known figure in the custom OS community, particularly on forums like TeamOS.

mkdir ~/liteos
sudo debootstrap --arch amd64 buster /var/lib/liteos http://archive.debian.org/debian/

This command sets up a Debian Buster base system in /var/lib/liteos.

Download Phoenix LiteOS 11 Ultralight Ultimate -FBConan-.iso if:

Avoid it if: