# Technical Documentation: dockur/windows

> ℹ️ **Provenance:** Multi-Tier Ingestion · [CodeWiki Reference](https://codewiki.google/github.com/dockur/windows)

### Overview (`readme.md`)

<h1 align="center">Windows<br />
<div align="center">
<a href="https://github.com/dockur/windows"><img src="https://github.com/dockur/windows/raw/master/.github/logo.png" title="Logo" style="max-width:100%;" width="96" /></a>
</div>
<div align="center">

[![Build]][build_url]
[![Version]][tag_url]
[![Size]][tag_url]
[![Package]][pkg_url]
[![Pulls]][hub_url]

</div></h1>

Windows inside a Docker container.

## Features ✨

- Runs Windows inside a Docker container
- Automatic download and hands-free installation
- Supports modern and legacy Windows releases
- Near-native performance with KVM acceleration
- Customizable CPU, memory, and storage allocation
- Dynamic memory allocation with memory ballooning
- USB passthrough and host folder sharing
- Supports NAT, user-mode, macvlan, and macvtap networking

## Video 📺

[](https://www.youtube.com/watch?v=xhGYobuG508)

## Usage 🐳

##### Docker Compose:

```yaml
services:
  windows:
    image: dockurr/windows
    container_name: windows
    environment:
      VERSION: "11"
    devices:
      - /dev/kvm
      - /dev/net/tun
    cap_add:
      - NET_ADMIN
    ports:
      - 8006:8006
      - 3389:3389/tcp
      - 3389:3389/udp
    volumes:
      - ./windows:/storage
    restart: always
    stop_grace_period: 2m
```

##### Docker CLI:

```bash
docker run -it --rm --name windows -e "VERSION=11" -p 8006:8006 --device=/dev/kvm --device=/dev/net/tun --cap-add NET_ADMIN -v "${PWD:-.}/windows:/storage" --stop-timeout 120 docker.io/dockurr/windows
```

##### Kubernetes:

```shell
kubectl apply -f https://raw.githubusercontent.com/dockur/windows/refs/heads/master/kubernetes.yml
```

##### Desktop applications

For a complete graphical desktop experience, see [WinBoat](https://winboat.app), [WinPodX](https://www.winpodx.org), or [WinApps](https://github.com/winapps-org/winapps). Each of these projects uses this container as its backend.

##### GitHub Codespaces:

[](https://codespaces.new/dockur/windows)

## Requirements ⚙️

- Docker or Podman on a Linux host with KVM support.
- Docker Desktop or Podman (Desktop) on Windows 11 with nested virtualization enabled.
- At least 2 GB of available RAM.
- At least 32 GB of free disk space.

> [!NOTE]
> Docker Desktop on Linux, macOS, and Windows 10 does not currently provide KVM access to containers and is therefore not supported.

## FAQ 💬

### How do I use it?

  Very simple! These are the steps:
  
  - Start the container and connect to [port 8006](http://127.0.0.1:8006/) using your web browser.

  - Sit back and relax while the magic happens, the whole installation will be performed fully automatically.

  - Once you see the desktop, your Windows installation is ready for use.
  
  Enjoy your brand new machine, and don't forget to star this repo!

### How do I select the Windows version?

  By default, Windows 11 Pro will be installed. But you can add the `VERSION` environment variable to your compose file, in order to specify an alternative Windows version to be downloaded:

  ```yaml
  environment:
    VERSION: "10"
  ```

  Select from the values below:
  
  | **Value** | **Version**            | **Size** |
  |---|---|---|
  | `11`   | Windows 11 Pro            | 7.9 GB   |
  | `11l`  | Windows 11 LTSC           | 4.7 GB   |
  | `11e`  | Windows 11 Enterprise     | 6.6 GB   |
  ||||
  | `10`   | Windows 10 Pro            | 5.7 GB   |
  | `10l`  | Windows 10 LTSC           | 4.6 GB   |
  | `10e`  | Windows 10 Enterprise     | 5.2 GB   |
  ||||
  | `8e`   | Windows 8.1 Enterprise    | 3.7 GB   |
  | `7u`   | Windows 7 Ultimate        | 3.1 GB   |
  | `vu`   | Windows Vista Ultimate    | 3.0 GB   |
  | `xp`   | Windows XP Professional   | 0.6 GB   |
  | `2k`   | Windows 2000 Professional | 0.4 GB   | 
  | `me`   | Windows ME                | 0.5 GB   |
  | `98`   | Windows 98                | 0.7 GB   |
  | `95`   | Windows 95                | 0.6 GB   |
  ||||  
  | `2025` | Windows Server 2025       | 7.6 GB   |
  | `2022` | Windows Server 2022       | 6.0 GB   |
  | `2019` | Windows Server 2019       | 5.3 GB   |
  | `2016` | Windows Server 2016       | 6.5 GB   |
  | `2012` | Windows Server 2012       | 4.3 GB   |
  | `2008` | Windows Server 2008       | 3.0 GB   |
  | `2003` | Windows Server 2003       | 0.6 GB   |
  ||||  
  | `core11`  | Tiny11 Core      | 3.0 GB   |
  | `tiny11`  | Tiny11           | 5.3 GB   |
  | `tiny10`  | Tiny10           | 3.6 GB   |
  | `reactos` | ReactOS          | 0.1 GB   |

> [!TIP]
> To install ARM64 versions of Windows use [dockur/windows-arm](https://github.com/dockur/windows-arm/).

### How do I change the storage location?

  To change the storage location, include the following bind mount in your compose file:

  ```yaml
  volumes:
    - ./windows:/storage
  ```

  Replace the example path `./windows` with the desired storage folder or named volume.

### How do I change the size of the disk?

  To expand the default size of 64 GB, add the `DISK_SIZE` setting to your compose file and set it to your preferred capacity:

  ```yaml
  environment:
    DISK_SIZE: "256G"
  ```
  
> [!TIP]
> This can also be used to resize an existing disk to a larger capacity without any data loss. However, you will need to [manually extend the disk partition](https://learn.microsoft.com/en-us/windows-server/storage/disk-management/extend-a-basic-volume?tabs=disk-management) afterwards, since the added disk space will appear as unallocated.

### How do I share files with the host?

  After installation there will be a folder called `Shared` on your desktop, which can be used to exchange files with the host machine.
  
  To select a folder on the host for this purpose, include the following bind mount in your compose file:

  ```yaml
  volumes:
    -  ./example:/shared
  ```

  Replace the example path `./example` with your desired shared folder, which then will become visible as `Shared` on the desktop and as drive `Z:`.

### How do I change the amount of CPU or RAM?

  By default, Windows will be allowed to use 2 CPU cores and 4 GB of RAM.

  If you want to adjust this, you can specify the desired amount using the following environment variables:

  ```yaml
  environment:
    RAM_SIZE: "8G"
    CPU_CORES: "4"
  ```

### How do I enable audio?

  Audio is disabled by default unless you are using RDP. To stream it to the browser, add the following environment variable:

  ```yaml
  environment:
    AUDIO: "Y"
  ```

  Then enable **Audio** under **Settings → Advanced** in the web viewer. The stream is only active while this option is enabled, so it uses no extra bandwidth otherwise.

### How do I connect using RDP?

  The web viewer is mainly intended for use during installation, since it is less responsive than RDP and does not support features such as clipboard sharing.

  So for a better experience you can connect using any Microsoft Remote Desktop client to the IP of the container, using the username `Docker` and password `admin`.

  There is an RDP client for [Android](https://play.google.com/store/apps/details?id=com.microsoft.rdc.androidx) available from the Play Store and one for [iOS](https://apps.apple.com/nl/app/microsoft-remote-desktop/id714464092?l=en-GB) in the Apple Store. For Linux you can use [FreeRDP](https://www.freerdp.com/) and on Windows just type `mstsc` in the search box.

### How do I configure the username and password?

  By default, a user called `Docker` is created and its password is `admin`.

  If you want to set up different credentials during installation, you can configure them in your compose file:

  ```yaml
  environment:
    USERNAME: "bill"
    PASSWORD: "gates"
  ```

  When `DOMAIN` is set, these variables are used as domain credentials instead.

### How do I join an Active Directory domain?

  Windows can automatically join an Active Directory domain during installation. Specify the domain name in your compose file:

  ```yaml
  environment:
    DOMAIN: "example.com"
    DOMAIN_OU: "OU=Virtual Machines,OU=Servers,DC=example,DC=com"
  ```

  Use the domain name, such as `example.com`, rather than a URL. The supplied account is added to the local Administrators group and automatically signed in after installation. `DOMAIN_OU` is optional and specifies where the computer account should be created. 

  Windows must be able to resolve and reach the domain controller through the domain's DNS server.

### How do I select the Windows language?

  By default, the English version of Windows will be downloaded.
  
  But you can add the `LANGUAGE` environment variable to your compose file, in order to specify an alternative language to be downloaded:

  ```yaml
  environment:
    LANGUAGE: "French"
  ```
  
  You can choose between: 🇦🇪 Arabic, 🇧🇬 Bulgarian, 🇨🇳 Chinese, 🇭🇷 Croatian, 🇨🇿 Czech, 🇩🇰 Danish, 🇳🇱 Dutch, 🇬🇧 English, 🇪🇪 Estonian, 🇫🇮 Finnish, 🇫🇷 French, 🇩🇪 German, 🇬🇷 Greek, 🇮🇱 Hebrew, 🇭🇺 Hungarian, 🇮🇹 Italian, 🇯🇵 Japanese, 🇰🇷 Korean, 🇱🇻 Latvian, 🇱🇹 Lithuanian, 🇳🇴 Norwegian, 🇵🇱 Polish, 🇵🇹 Portuguese, 🇷🇴 Romanian, 🇷🇺 Russian, 🇷🇸 Serbian, 🇸🇰 Slovak, 🇸🇮 Slovenian, 🇪🇸 Spanish, 🇸🇪 Swedish, 🇹🇭 Thai, 🇹🇷 Turkish and 🇺🇦 Ukrainian.

### How do I select the keyboard layout?

  If you want to set up a keyboard layout or locale that is not the default for your selected language, you can add `KEYBOARD` and `REGION` variables like this:

  ```yaml
  environment:
    REGION: "en-US"
    KEYBOARD: "en-US"
  ```

### How do I install a custom image?

  In order to download an unsupported ISO image, specify its URL in the `VERSION` environment variable:
  
  ```yaml
  environment:
    VERSION: "https://example.com/win.iso"
  ```

  Alternatively, you can also skip the download and use a local file instead, by binding it in your compose file in this way:
  
  ```yaml
  volumes:
    - ./example.iso:/custom.iso
  ```

  Replace the example path `./example.iso` with the filename of your desired ISO file. The value of `VERSION` will be ignored in this case.

### How do I run a command after installation?

  To execute a single command during the final step of the automatic installation, add the `COMMAND` environment variable:

  ```yaml
  environment:
    COMMAND: 'reg add "HKLM\Software\Example" /v Enabled /t REG_DWORD /d 1 /f'
  ```

  To run a script or include additional files, create a file called `install.bat` and place it in a folder together with any files it needs, such as software to be installed.

  Then bind that folder in your compose file like this:

  ```yaml
  volumes:
    - ./example:/oem
  ```

  The example folder `./example` will be copied to `C:\OEM` and the `install.bat` file inside it will be executed during the final step of the automatic installation.

### How do I assign an individual IP address to the container?

  By default, the container uses bridge networking, which shares the IP address with the host. 

  If you want to assign an individual IP address to the container, you can create a macvlan network as follows:

  ```bash
  docker network create -d macvlan \
      --subnet=192.168.0.0/24 \
      --gateway=192.168.0.1 \
      --ip-range=192.168.0.100/28 \
      -o parent=eth0 vlan
  ```
  
  Be sure to modify these values to match your local subnet. 

  Once you have created the network, change your compose file to look as follows:

  ```yaml
  services:
    windows:
      container_name: windows
      ..<snip>..
      networks:
        vlan:
          ipv4_address: 192.168.0.100

  networks:
    vlan:
      external: true
  ```
 
  An added benefit of this approach is that you won't have to perform any port mapping anymore, since all ports will be exposed by default.

> [!IMPORTANT]  
> This IP address won't be accessible from the Docker host due to the design of macvlan, which doesn't permit communication between the two. If this is a concern, you need to create a [second macvlan](https://blog.oddbit.com/post/2018-03-12-using-docker-macvlan-networks/#host-access) as a workaround.

### How can Windows acquire an IP address from my router?

  After configuring the container for [macvlan](#how-do-i-assign-an-individual-ip-address-to-the-container), it is possible for Windows to become part of your home network by requesting an IP from your router, just like a real PC.

  To enable this mode, in which the container and Windows will have separate IP addresses, add the following lines to your compose file:

  ```yaml
  environment:
    DHCP: "Y"
  devices:
    - /dev/vhost-net
  device_cgroup_rules:
    - 'c *:* rwm'
  ```

### How do I add multiple disks?

  To create additional disks, modify your compose file like this:
  
  ```yaml
  environment:
    DISK2_SIZE: "32G"
    DISK3_SIZE: "64G"
  volumes:
    - ./example2:/storage2
    - ./example3:/storage3
  ```

### How do I pass through a disk?

  You can pass through disk devices or partitions directly by adding them to your compose file in this way:

  ```yaml
  devices:
    - /dev/sdb:/disk1
    - /dev/sdc1:/disk2
  ```

  Use `/disk1` if you want it to become your main drive (which will be formatted during installation), and use `/disk2` and higher to add them as secondary drives (which will stay untouched).

### How do I pass through a USB device?

  To pass through a USB device, first look up its vendor and product IDs via the `lsusb` command, then add them to your compose file like this:

  ```yaml
  environment:
    ARGUMENTS: "-device usb-host,vendorid=0x1234,productid=0x1234"
  devices:
    - /dev/bus/usb
  ```

> [!WARNING]  
> Adding a USB mass storage device before Windows Setup has finished may cause it to fail. Or worse: the drive can get formatted as the system disk, and all your data will be lost! So always keep them disconnected when launching the container for the first time.

### How do I enable dynamic memory allocation?

  By default, the VM is allocated the full amount of RAM configured via `RAM_SIZE` for its entire lifetime.

  However, you can enable [memory ballooning](https://github.com/qemus/qemu/blob/master/docs/ballooning.md) if you want the container to dynamically reclaim unused guest RAM based on host memory pressure.

### Are these all available options?

  No. For a complete overview of all supported settings, see the [environment variables](docs/environment.md) page.

### How do I verify that KVM is available?

  First, make sure your platform and container runtime meet the [requirements](#requirements-️) listed above.

  On a Linux host, install `cpu-checker` and run:

  ```bash
  sudo apt install cpu-checker
  sudo kvm-ok
  ```

  A working configuration should report:

  ```text
  KVM acceleration can be used
  ```

  You can also verify that the KVM device exists:

  ```bash
  ls -l /dev/kvm
  ```

  If KVM is unavailable, check whether:

  - Hardware virtualization (`Intel VT-x` or `AMD-V`) is enabled in your BIOS or UEFI.
  - Nested virtualization is enabled when the host itself is a virtual machine.
  - Your VPS or cloud provider supports nested virtualization.

  If `kvm-ok` succeeds but the container still reports that KVM is unavailable, you can temporarily add `privileged: true` to your Compose file to rule out a permission or device-access issue.

### How do I run macOS in a container?

  You can use [dockur/macos](https://github.com/dockur/macos) for that. It shares many of the same features, except for the automatic installation.

### How do I run a Linux desktop in a container?

  You can use [qemus/qemu](https://github.com/qemus/qemu) in that case.

### Is this project legal?

  Yes, this project contains only open-source code and does not distribute Windows itself. Any product keys found in the code are generic installation keys published by Microsoft for trial purposes and are not valid activation licenses.

  You are responsible for ensuring that you have a valid Windows license and that your use complies with Microsoft's licensing terms.

## Stars 🌟
[](https://github.com/dockur/windows/stargazers)

## Disclaimer ⚖️

*The product names, logos, brands, and other trademarks referred to within this project are the property of their respective trademark holders. This project is not affiliated, sponsored, or endorsed by Microsoft Corporation.*

[build_url]: https://github.com/dockur/windows/
[hub_url]: https://hub.docker.com/r/dockurr/windows/
[tag_url]: https://hub.docker.com/r/dockurr/windows/tags
[pkg_url]: https://github.com/dockur/windows/pkgs/container/windows

[Build]: https://github.com/dockur/windows/actions/workflows/build.yml/badge.svg
[Size]: https://img.shields.io/docker/image-size/dockurr/windows/latest?color=066da5&label=size
[Pulls]: https://img.shields.io/docker/pulls/dockurr/windows.svg?style=flat&label=pulls&logo=docker
[Version]: https://img.shields.io/docker/v/dockurr/windows/latest?arch=amd64&sort=semver&color=066da5
[Package]: https://img.shields.io/badge/dynamic/json?url=https%3A%2F%2Fipitio.github.io%2Fbackage%2Fdockur%2Fwindows%2Fwindows.json&query=%24.downloads&logo=github&style=flat&color=066da5&label=pulls

---

### Environment (`docs/environment.md`)

# Environment Variables

This page lists all the environment variables that can be used to configure the container.

An empty default means the variable is unset and its value is determined automatically when applicable.

## 🪟 Windows

| Variable | Default | Description |
|---|---|---|
| `VERSION` | `11` | Windows version to install, such as `10` or `11`. |
| `EDITION` |  | Windows edition to install, such as `core` for Windows Server Core. |
| `LANGUAGE` | `en-US` | Windows display language, such as `English`, `en-US`, or `en`. |
| `KEY` |  | Windows product key used to install and activate Windows. |
| `REGION` |  | Regional format. Uses `LANGUAGE` when unset. |
| `KEYBOARD` |  | Keyboard layout. Uses `LANGUAGE` when unset. |
| `USERNAME` | `Docker` | Name of the Windows user account. |
| `PASSWORD` | `admin` | Password for the Windows account. |
| `AUTOLOGIN` | `Y` | Automatically signs in to Windows after startup. |
| `DOMAIN` |  | Active Directory domain to join during installation. |
| `DOMAIN_OU` |  | Distinguished name of the organizational unit. |
| `WORKGROUP` |  | Name of the Windows workgroup to join. |

## 🧠 CPU and Memory

| Variable | Default | Description |
|---|---|---|
| `CPU_CORES` | `2` | Number of virtual CPU cores, such as `4`, `half`, or `max`. |
| `CPU_MODEL` | `host` | QEMU CPU model. |
| `CPU_FLAGS` |  | Additional QEMU CPU flags. |
| `SMP` |  | Custom CPU topology. Determined from `CPU_CORES` when unset. |
| `KVM` | `Y` | Enables KVM hardware acceleration. |
| `VMX` | `N` | Exposes Intel VMX virtualization extensions to the guest. |
| `HV` | `Y` | Enables Hyper-V enlightenments for Windows guests. |
| `RAM_SIZE` | `4G` | Amount of RAM assigned to Windows, such as `8G`, `half`, or `max`. |
| `RAM_BACKEND` |  | Guest RAM backing mechanism, set `memfd` for memfd-backed memory. |
| `RAM_CHECK` | `Y` | Checks whether enough host memory is available before starting Windows. |

## 💾 Storage

| Variable | Default | Description |
|---|---|---|
| `DISK_SIZE` | `64G` | Size of the primary disk. |
| `DISK_FMT` | `raw` | Disk image format: `raw` or `qcow2`. |
| `DISK_TYPE` | `scsi` | Disk device type, such as `ide`, `scsi`, or `blk`. |
| `DISK_CACHE` | `none` | Disk cache mode, such as `none` or `writeback`. |
| `DISK_IO` | `native` | Disk I/O mode, such as `native`, `threads`, or `io_uring`. |
| `DISK_DISCARD` | `unmap` | Discard/TRIM mode for the primary disk. |
| `DISK_ROTATION` | `1` | Rotation rate reported to the guest. Use `1` to identify the disk as an SSD. |
| `DISK_FLAGS` |  | Additional options used when creating `qcow2` disks. |
| `DISK_OPTIONS` |  | Additional options appended to QEMU disk devices. |
| `ALLOCATE` | `N` | Preallocates space for the primary disk. |
| `STORAGE` | `/storage` | Storage directory used for disks, firmware variables, and downloads. |

## 🌐 Networking

| Variable | Default | Description |
|---|---|---|
| `NETWORK` |  | Network mode, such as `nat`, `user`, or `N` to disable networking. |
| `DHCP` | `N` | Enables macvtap networking so Windows receives a DHCP address. |
| `HOST` |  | Optional Windows computer name and advertised network hostname. |
| `IP` |  | Overrides the automatically selected guest IPv4 address. |
| `MAC` |  | Guest network adapter MAC address. |
| `ADAPTER` | `virtio-net-pci` | QEMU network adapter model. |
| `DEV` | `eth0` | Container network interface used as the uplink. |
| `MTU` |  | MTU assigned to the guest network interface. |
| `MASK` | `255.255.255.0` | IPv4 netmask for guest network. |
| `TAP` | `qemu` | TAP or macvtap interface name. |
| `BRIDGE` | `docker` | Bridge name used for NAT networking. |
| `HOST_PORTS` |  | Ports excluded from guest forwarding. |
| `USER_PORTS` |  | Additional ports to forward to Windows when using user-mode networking. |
| `DNSMASQ_OPTS` |  | Additional options passed to dnsmasq. |
| `DNSMASQ_DEBUG` | `N` | Enables dnsmasq debug output. |
| `DNSMASQ_DISABLE` | `N` | Disables the internal dnsmasq resolver. |
| `PASST_OPTS` |  | Additional options passed to passt. |
| `PASST_DEBUG` | `N` | Enables passt debug output. |

## 🖥️ Display

| Variable | Default | Description |
|---|---|---|
| `DISPLAY` | `web` | Display backend, such as `web`, `vnc`, `disabled`, or `none`. |
| `VGA` | `virtio` | QEMU video adapter model. |
| `WIDTH` | `1280` | Display width configured in Windows. |
| `HEIGHT` | `720` | Display height configured in Windows. |
| `GPU` | `N` | Enables GPU acceleration. |
| `VRAM_SIZE` | `4G` | Virtual GPU memory budget. |
| `RENDERNODE` | `/dev/dri/renderD128` | Render node used for GPU acceleration. |

## 🌍 Web UI

| Variable | Default | Description |
|---|---|---|
| `WEB` | `Y` | Enables the web interface. |
| `WEB_PORT` | `8006` | Port for the web interface. |
| `VNC_PORT` | `5900` | Port for the VNC server. |
| `LOSSY` | `N` | Enables lossy VNC compression to reduce bandwidth usage. |
| `AUDIO` | `N` | Streams guest audio to the web viewer. |
| `PROTECT` | `N` | Enables password protection for the web interface. |

## 📁 File Sharing

| Variable | Default | Description |
|---|---|---|
| `SAMBA` | `Y` | Enables the Samba shared folder. |
| `SAMBA_DEBUG` | `N` | Enables Samba debug output. |
| `SAMBA_READONLY` | `N` | Enables read-only mode for the shared folder. |
| `SHORTCUT` | `Y` | Creates desktop and drive shortcuts to the shared folder. |

## ⚙️ System

| Variable | Default | Description |
|---|---|---|
| `MACHINE` | `q35` | QEMU machine type. |
| `PCI_BUS` | `pcie.0` | Overrides the PCI bus used for attached devices. |
| `RNG` | `Y` | Adds the Virtio RNG device to the machine. |
| `UUID` |  | UUID assigned to Windows. |
| `HPET` | `N` | HPET timer setting. |
| `VMPORT` | `N` | VMware port setting. |
| `MOUSE` | `usb-tablet` | Pointing device used by the machine. |
| `SOUND` | `intel-hda` | Audio device used when `AUDIO=Y`. |
| `SM_BIOS` |  | Additional arguments passed to QEMU’s `-smbios` option. |
| `ARGUMENTS` |  | Additional raw arguments appended to the QEMU command line. |

## 🚀 Boot

| Variable | Default | Description |
|---|---|---|
| `BOOT_MODE` | `windows` | Boot configuration, such as `windows`, `windows_secure`, or `windows_legacy`. |
| `BOOT_INDEX` | `9` | Boot priority index for the installation media. |
| `MEDIA_TYPE` |  | Device type used for installation media. |
| `USB` | `qemu-xhci,id=xhci` | QEMU USB controller configuration. |
| `BIOS` |  | Custom firmware file. |
| `TPM` | `N` | Enables the TPM emulator, usually set by `BOOT_MODE`. |
| `SMM` | `N` | Enables System Management Mode, usually set by `BOOT_MODE`. |
| `LOGO` | `Y` | Enables the custom boot logo. |
| `CLEAR` | `N` | Resets the NVRAM variables on the next boot. |

## 🎈 Memory Ballooning

Also see [Dynamic memory allocation](https://github.com/qemus/qemu/blob/master/docs/ballooning.md) for usage instructions and important caveats.

| Variable | Default | Description |
|---|---|---|
| `BALLOONING` | `N` | Enables dynamic memory ballooning. |
| `BALLOONING_MIN_MEM` | `33%` | Minimum amount of memory retained by the VM. |
| `BALLOONING_RAM_THRESHOLD` | `80.0` | Host RAM usage percentage at which ballooning begins adjusting memory. |
| `BALLOONING_RAM_THRESHOLD_HARD` | `90.0` | Host RAM usage percentage at which ballooning becomes more aggressive. |
| `BALLOONING_PSI_PRESSURE` | `10.0` | PSI memory pressure level at which ballooning becomes more aggressive. |
| `BALLOONING_PSI_PRESSURE_MAX` | `50.0` | PSI memory pressure level at which ballooning reaches its strongest response. |
| `BALLOONING_HYSTERESIS` | `128M` | Minimum memory change before the balloon target is updated. |
| `BALLOONING_KP` | `0.5` | Proportional gain used by the ballooning controller. |
| `BALLOONING_KI` | `0.05` | Integral gain used by the ballooning controller. |
| `BALLOONING_INTERVAL` | `5` | Polling interval in seconds. |
| `BALLOONING_DEBUG` | `N` | Enables debug output for the ballooning monitor. |

## 💿 Installation

| Variable | Default | Description |
|---|---|---|
| `CONNECTIONS` | `4` | Number of connections used for ISO file downloads. |
| `MIDO` | `Y` | Enables downloading Windows ISO files directly from Microsoft. |
| `ESD` | `Y` | Enables downloading Windows through the ESD-based installation method. |
| `VERIFY` | `N` | Verifies downloaded installation media against predefined checksums. |
| `REMOVE` | `Y` | Deletes the downloaded Windows ISO after installation to save space. |
| `COMMAND` |  | Command to be executed during the final step of automatic installation. |

## 🔌 Shutdown

| Variable | Default | Description |
|---|---|---|
| `SHUTDOWN` | `Y` | Enables graceful ACPI shutdown. |
| `TIMEOUT` | `105` | Maximum time, in seconds, to wait before forcing Windows to stop. |

## 🐞 Debugging

| Variable | Default | Description |
|---|---|---|
| `DEBUG` | `N` | Enables verbose debug output. |
| `TRACE` | `N` | Enables shell command tracing. |
| `LOG`   | `N` | Saves all output from `install.bat` to `C:\OEM\install.log` for troubleshooting. |
| `SERIAL` | `mon:stdio` | QEMU serial device, such as `/storage/serial.sock` or `4444`. |
| `MONITOR` |  | QEMU monitor, such as `/storage/monitor.sock` or `4444`. |
| `QMP` |  | QEMU Machine Protocol, such as `/storage/qmp.sock` or `4444`. |
| `QGA` |  | QEMU Guest Agent, such as `/storage/qga.sock` or `4444`. |

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--- METRICS ---
- Files Extracted: 2
- Estimated Token Budget: ~6618 tokens
- Canonical Reference: https://codewiki.google/github.com/dockur/windows