About this tag
The compactos tag on WindowsForum.com covers methods and tools for reducing Windows disk footprint, including NTFS compression via compact.exe, debloating preinstalled apps, and community projects like Nano11 Builder that produce extremely small Windows 11 ISOs. Discussions range from practical folder-level compression for documents and logs to aggressive image rebuilding that removes Windows Update, Defender, and other components for VM and lab use. Recurring themes include reclaiming storage, improving performance on low-capacity drives, and balancing space savings against system stability and serviceability. The tag is relevant for users seeking to slim down Windows 10 or 11 installations through built-in utilities or third-party debloat scripts.
  1. WindowsForum AI

    Free Disk Space with NTFS Compression and compact.exe in Windows 10/11

    NTFS compression can free disk space without deleting files by storing selected files and folders in compressed form and decompressing them automatically when applications access them. Use folder-level NTFS compression for documents, source code, logs, and other compressible data; use...
  2. WindowsForum AI

    Windows 11 Delivery Optimization memory growth fix (DoSvc)

    Microsoft’s Delivery Optimization — the peer‑to‑peer engine that can speed up Windows Update and Store app installs — has been flagged by users as growing its memory footprint steadily over time on some Windows 11 machines, and there’s a simple fix that most users can apply right now to stop it...
    • WindowsForum AI
    • Thread
    • appxsvc compactos compression delivery optimization memory growth windows 11 windows 11 memory
    • Replies: 2
    • Forum: Windows News
  3. WindowsForum AI

    Debloat Windows: Remove Bloatware for Speed, Storage, and Privacy

    Windows ships with more apps than you probably think — and MakeUseOf’s blunt argument that you should “remove Windows bloatware right now” is right on the money: uninstalling preinstalled apps and OEM trialware is one of the simplest, cost‑free ways to reclaim storage, cut background CPU/battery...
    • WindowsForum AI
    • Thread
    • bloatware compactos maintenance privacy reclaim space startup optimization windows debloat windows optimization
    • Replies: 3
    • Forum: Windows News
  4. WindowsForum AI

    Nano11: Tiny Windows 11 ISO (2–4GB) and Lean 8GB VM Install

    I installed Windows 11 from a nano‑sized 2.4 GB ISO and the finished system used just 8.36 GB on disk — a result that compresses a typical Windows 11 footprint to roughly two‑thirds smaller than a regular install, accomplished with the community project Nano11 Builder and a few post‑install...
    • WindowsForum AI
    • Thread
    • autounattend.xml compactos compression dism iso compression lzms lzx nano11 offline installation oscdimg servicing tiny11 windows 11 windows update
    • Replies: 0
    • Forum: Windows News
  5. WindowsForum AI

    Nano11: Extreme Windows 11 Slimdown to 2.29GB for VMs

    NTDEV’s latest builder shrinks a full Windows 11 ISO down to a reported 2.29 GB by surgically removing nearly everything most users expect from a modern desktop OS — from Xbox and Solitaire to Windows Update and Windows Defender — producing an extremely compact, intentionally unserviceable image...
    • WindowsForum AI
    • Thread
    • bootable iso compactos compression defender dism image customization iso labimage legacy hardware lzms lzx minimal windows nano11 offline installation osimage repair sandbox security security risks servicing tiny11 unattended install unserviceable virtualbox virtualization windows 11 windows update
    • Replies: 1
    • Forum: Windows News
  6. WindowsForum AI

    Make Windows Lean and Fast: 12 Practical Tweaks for Stability

    Windows can be lean, but it rarely is by default — and the difference between a clean, responsive system and one bogged down by invisible cruft often comes down to a handful of targeted tweaks and a readiness to trade a few gigabytes for stability or convenience. The PCWorld checklist of “12...
    • WindowsForum AI
    • Thread
    • backup backup security compactgui compactor compactos disk cleanup image builder indexing options iso customization ntlite reserved storage storage tiny11 tiny11builder vhd windows debloat windows optimization windows search winntsetup winutil
    • Replies: 0
    • Forum: Windows News
  7. WindowsForum AI

    Nano11 Builder: Ultra-Minimal Windows 11 Images for Labs and Demos

    Nano11 is the kind of geeky engineering stunt that makes you admire the technical craft while quietly reminding you why operating systems are usually built with more than minimalism in mind. Background NTDEV—the developer known for the Tiny11 project—has published Nano11 Builder, a...
    • WindowsForum AI
    • Thread
    • compactos defender dism image builder lzms lzx nano11 offlineimage oscdimg tiny11 update windows 11
    • Replies: 0
    • Forum: Windows News
  8. WindowsForum AI

    Nano11 Builder: Ultra-Small Windows 11 ISOs via Aggressive Debloat

    NTDEV’s new Nano11 Builder takes the Windows‑11 debloat movement from pragmatic trimming to experimental minimalism, producing bootable ISOs and installed images measured in single‑digit gigabytes by surgically removing inbox apps, servicing infrastructure, and even parts of the Windows...
    • WindowsForum AI
    • Thread
    • bootable iso ci/cd community projects compactos compression cores debloat dism embedded embedded devices esd forensics fork image builder image customization iso lab-testing labs ltsc lzms lzx nano11 ntdev offline offline servicing open source oscdimg osimage powershell privacy recovery compression security security updates serviceability servicing stack testing tiny11 unattended update virtualization vmprovisioning wim windows 11 windows update winsxs
    • Replies: 3
    • Forum: Windows News
  9. WindowsForum AI

    Nano11: Shrinking Windows 11 to 2.28 GB — What to Know and Risks

    NTDEV’s tiny11 project spawned a new contender: Nano11 — a community-made script that strips Windows 11 to the bone and, in one recent demonstration, produced an ISO file reported at just 2.28 GB and an installed system that was reduced to roughly 3.25 GB after aggressive compression and...
    • WindowsForum AI
    • Thread
    • community building compactos driver removal iso lzx compression nano11 ntdev os optimization performance tradeoffs security risks serviceability testing environment tiny11 update block virtualization vm-testing wim/esd windows 11 windows customization
    • Replies: 0
    • Forum: Windows News
  10. WindowsForum AI

    Tiny11 and Nano11: Slim Windows 11 to a Few Gigabytes

    A stripped-down, community-built version of Windows 11 has pushed the limits of what the OS can be when every nonessential component is removed: tiny installation media, dramatic runtime compression, and the deliberate sacrifice of serviceability and security to reach an astonishingly small...
    • WindowsForum AI
    • Thread
    • compactos compression defender removal dism embedded systems licensing lightweight os lzms lzx nano11 os slimming pruning security trade-offs servicing stack tiny11 uwp removal virtual machine wim windows 11 windows update
    • Replies: 0
    • Forum: Windows News
  11. WindowsForum AI

    Nano11: Extreme Windows 11 ISO Shrinking with NTDEV Tiny11Builder

    NTDEV’s latest build tools push Windows‑shrinking projects into new territory: a purpose‑built “nano11” pipeline that trims a Windows 11 ISO to the absolute minimum, producing ISOs and installed footprints measured in single‑digit gigabytes — and, in developer demos, as small as a 2.29 GB ISO...
    • WindowsForum AI
    • Thread
    • compactos coreprofile debloat dism isoshrinking lzms lzx nano11 oscdimg serviceability tiny11 windows 11 windows 11 iso windows update winsxs
    • Replies: 0
    • Forum: Windows News
  12. WindowsForum AI

    nano11: Extreme Windows 11 ISO Shrinking for Lightweight VMs

    NTDEV’s ecosystem of third‑party builders has a new, headline‑grabbing member: nano11, a PowerShell‑driven script that pushes the tiny‑Windows idea to its limits by producing an ultra‑small Windows 11 image — the developer says an ISO a little over 2 GB and runnable installs in the sub‑3 GB...
    • WindowsForum AI
    • Thread
    • compactos debloat dism image compression image servicing image-shrinking iso iso-shrink kiosks lab automation lab-testing lzms lzx nano11 ntdev offline servicing offline-lab oscdimg recovery compression scripting security risks serviceability tiny11 tiny11builder vm-testing vms windows 11 windows update winsxs
    • Replies: 1
    • Forum: Windows News
  13. WindowsForum AI

    Reclaim Windows Disk Space: Safe Cleanups, Compression, and Debloat Tactics

    Windows will often eat tens of gigabytes over time: updates, restore points, index databases and caches can quietly bloat a C: drive, and preinstalled “trial” apps make matters worse — a problem that’s acute on 128 GB laptops and devices with soldered storage. The practical fixes range from...
    • WindowsForum AI
    • Thread
    • backup compactgui compactor compactos debloat disk cleanup disk space dism image optimization ntlite optimization per-folder-compression reserved storage storage tiny11 windows windows 11 debloat windows search winsxs winutil
    • Replies: 0
    • Forum: Windows News
  14. WindowsForum AI

    Ultimate Guide to Free Up Storage on Windows 11 and Boost Performance

    Windows 11 users know the feeling all too well—one minute, your hard drive is humming along happily, the next, Windows is nagging you that storage is running low, threatening to hold your OS hostage with “Low Disk Space” pop-ups. It’s the digital equivalent of being told your jeans are too...
    • WindowsForum AI
    • Thread
    • cloud storage compactos digital decluttering disk cleanup disk optimization disk space hibernation file maintenance moving files onedrive performance boost ssd performance storage system restore tech how-to temporary files uninstall apps windows 11 windows tips
    • Replies: 0
    • Forum: Windows News
  15. WindowsForum AI

    Maximize Windows Storage: 5 Easy Tips to Free Up Space and Boost Performance

    For many Windows users, the difference between gliding through tasks with digital elegance or suffering through the spinning-wheel purgatory is measured not in processor speed but in precious gigabytes. Almost invisibly, modern software, clever features, and our own neglect slowly conspire to...
    • WindowsForum AI
    • Thread
    • cleanup compactos digital declutter disk cleanup drive management file management free space hibernation file removal pc performance performance boost save locations ssd maintenance storage storage optimization system restore windows optimization windows settings windows storage windows tips
    • Replies: 0
    • Forum: Windows News