Have made space for it on Windows, but LCOS installer requires partitioning.
Been spoiled with distros like KDE Neon that simply replace that space.
What impressed me with a video i saw, was that LCOS sits idle at less than 500m
2 Likes
nevj
(Neville Jackson)
5 October 2026 13:00
2
You mean you made a partition on a computer that already has windows? Of did you just make unpartitioned space?
Do you know what partitions LCOS requires? That is basic … read the manual and find out.
then
You can either
make the partitions first with gparted, or
start the LCOS installer and let it make the partitions
Either way , you need to know what its partition requirements are.
Do your homework first.
An easier way is to install it in a VM … there you can give it the whole virtual disk to itself.
2 Likes
Have never worked with VM before.
Could not find a manual or what LCOS requires.
But based on Devuan, it shouldn’t be that intensive.
Its forum is empty: https://forum.lunduke.com/ and did not want to register to another forum for help.
Have unpartitioned space (88G) on standy.
1 Like
nevj
(Neville Jackson)
5 October 2026 13:21
4
How you partition it will depend on
how you boot … legacy or uefi
disk partition table … GPT or msdos
what LCOS needs … probably a root partition and swap
If there are no install instructions, I think you need to try it in a VM first and learn by doing an install.
That is not the only issue. You need to decide how you are going to boot it, and how you are going to get Win to boot afterwards.
Does it use grub as the bootloader?
1 Like
nevj
(Neville Jackson)
5 October 2026 13:27
5
Good time to learn. Vbox and Virtmanager require a VM capable computer … dont try it in an old or underpowered machine.
1 Like
nevj
(Neville Jackson)
5 October 2026 13:31
6
Daniel:
based on Devuan,
Devuan is an easy install. It uses the refracta installer. It is graphic
Is Lcos a live iso … boot it from a usb drive … there might be some instructions inside the live distro.
Try asking AI … it often has answers that you cant find with google
1 Like
easyt50
(Howard )
5 October 2026 13:34
7
Looks like a brand new Linux distro being still in beta.
AI Overview
LCOS (Lunduke Computer Operating System) is a minimalist, systemd-free Linux distribution created by Bryan Lunduke that combines a retro 1990s desktop aesthetic with modern lightweight software. [1 , 2 ]
Key Characteristics
Systemd-Free Base : Built on Devuan , which is a fork of Debian that operates without systemd, utilizing the Xfce desktop environment.
Lunduke Linux Kernel : Uses a custom, “stainless” (Rust-free) kernel configuration built for performance, memory efficiency, and direct maintenance control.
Core Ideals : Designed explicitly without online user accounts, artificial intelligence features, ID or age verification, or forced telemetry.
Governance : Maintained under a monarchical project model by Bryan Lunduke to prevent committee delays and political interventions.
Included Applications : Ships with lightweight productivity tools like AbiWord and Gnumeric, media players like VLC, a streamlined Brave Origin browser, and retro additions like Zork and Lunduke City (a rewrite of Metropolis/SimCity). [1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 ]
2 Likes
nevj
(Neville Jackson)
5 October 2026 13:37
8
@easyt50
Howard, can you find him any install instructions with your AI?
1 Like
easyt50
(Howard )
5 October 2026 17:00
9
I use google for the search which in turn call Gemini AI. Here is what Gemini explain the install procedure would be directly to the PC. @danielson said he is unfamiliar using a VM. This post is going to be a bit long.
Installing LCOS directly on bare metal yields excellent, highly responsive performance since the OS only pulls around 188MB of RAM at idle and interacts directly with your hardware. [1 , 2 ]
Because it targets minimal bloat and skips Systemd, deploying it to a physical PC requires precise attention to the boot process and hard drive formatting. [1 ]
Step 1: Flash the ISO to USB
Grab the latest ISO image from the official LCOS GitHub Releases Page .
Use Rufus or Ventoy to write the image. If using Rufus, choose DD Image mode if prompted, as minimalist Devuan-based ISOs occasionally run into mounting errors when flashed via standard ISO mode. [1 , 2 ]
Step 2: Configure Your PC’s BIOS / UEFI
Shut down your target PC and plug in the live USB.
Power it on and smash your BIOS/UEFI hotkey (usually F2, F12, Del, or Esc).
Turn Off Secure Boot: LCOS is built to strip away forced verifications and tracking. Secure Boot will usually block its custom components and custom Linux kernel from booting. Set Secure Boot to Disabled .
Set your USB drive as the Primary Boot Device , save, and reboot. [1 , 2 , 3 , 4 ]
Step 3: Run the Refractor / Calamares Installer
Once you boot into the live desktop environment, click the installer icon. The custom installer handles hardware setup as follows: [1 , 2 , 3 ]
Choose Login Preferences: Select whether you want the machine to log automatically into the console or desktop upon booting. [1 ]
Disk Partitioning (Crucial for Bare Metal):
Erase Entire Disk: Recommended if LCOS is the only operating system on this PC. It handles the format and boot records automatically.
Manual Partitioning: Choose this if you are managing a Dual-Boot configuration with Windows or another Linux flavor. You will need to manually map a root partition (/) and assign the existing EFI System Partition to mount at /boot/efi without formatting it. [1 , 2 ]
Bootloader Selection: Confirm the option to write the GRUB Bootloader . If you are running an older machine without UEFI, select the MBR (Master Boot Record) one-click installation . [1 ]
Step 4: First Boot Check & Post-Install
When the installer completes, remove the USB drive and reboot. Once sitting at your fresh Xfce desktop, open a terminal to verify and update your bare metal environment: [1 , 2 ]
2 Likes
Thanks!
Set one to /
and another (555mg) to efi/boot and we’re good to go!
1 Like
ihasama
(ihasama)
5 October 2026 20:15
11
That’s easy. Just use an old computer and any Linux distro with Desktop Environment sits at that. Give a computer with 32gb of RAM and the same Linux distro takes 2GB at idle.
1 Like
nevj
(Neville Jackson)
5 October 2026 21:53
12
Thanks Howard,
I would use dd rather than rufus or ventoy
Its advice is for a system with uefi boot and gpt partition table only … that is probably what @danielson has, because he has Win.
Dont forget to tell it to install grub.
Grub may or may not boot Win afterwards … you may need to enable os-prober in LCOS and reconfigure grub.
3 Likes
Yup, Rufus made me use dd.
3 Likes