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README.md

Quickemu

Quickly create and run optimised Windows, macOS and Linux desktop virtual machines.

Made with 💝 for

Introduction

Quickly create and run highly optimised desktop virtual machines for Linux, macOS and Windows; with just two commands. You decide what operating system you want to run and Quickemu will figure out the best way to do it for you. For example:

quickget ubuntu-mate impish
quickemu --vm ubuntu-mate-impish.conf

The original objective of the project was to enable quick testing of Linux distributions where the virtual machine configurations can be stored anywhere, such as external USB storage or your home directory, and no elevated permissions are required to run the virtual machines. Quickemu now also includes comprehensive support for macOS and Windows.

Features

macOS Monterey, Big Sur, Catalina, Mojave & High Sierra
Windows 8.1, 10 and 11 including TPM 2.0
Ubuntu and all the official Ubuntu flavours
Debian (bullseye with all the official and non-free DE variants)
Fedora & openSUSE (Leap, Tumbleweed, MicroOS)
Alma Linux
Linux Mint (Cinnamon, MATE, and XFCE), elementary OS, Pop!_OS
Arch Linux, Kali,Garuda, ZorinOS & NixOS
Oracle Linux and Rocky Linux
Regolith Linux (Release 1.6 and latest 2.0.0 pre-release )
FreeBSD & OpenBSD
Full SPICE support including host/guest clipboard sharing
VirtIO-webdavd file sharing for Linux and Windows guests
VirtIO-9p file sharing for Linux and macOS guests
QEMU Guest Agent support; provides access to a system-level agent via standard QMP commands
Samba file sharing for Linux, macOS and Windows guests (if smbd is installed on the host)
VirGL acceleration
USB device pass-through
Smartcard pass-through
Automatic SSH port forwarding to guests
Network port forwarding
Full duplex audio
EFI (with or without SecureBoot) and Legacy BIOS boot
Graphical user interfaces available

Quickemu is a wrapper for the excellent QEMU that attempts to automatically "do the right thing", rather than expose exhaustive configuration options.

We have a Discord for this project:

See this (old) video where I explain some of my motivations for creating Quickemu.

Requirements

QEMU (6.0.0 or newer) with GTK, SDL, SPICE & VirtFS support
bash (4.0 or newer)
Coreutils
EDK II
grep
jq
LSB
procps
python3
macrecovery
mkisofs
usbutils
util-linux
sed
spicy
swtpm
Wget
xdg-user-dirs
xrandr
zsync

Install Quickemu

Ubuntu

Quickemu is available from a PPA for Ubuntu users. The Quickemu PPA also includes a back port of QEMU 6.0.0 for 20.04 (Focal) and 21.04 (Hirsute). To install Quickemu and all the dependencies run the following in a terminal:

sudo apt-add-repository ppa:flexiondotorg/quickemu
sudo apt update
sudo apt install quickemu

Other Linux

git clone --depth=1 https://github.com/wimpysworld/quickemu
cd quickemu

Now install all the Requirements documented above.

Usage

Graphical User Interfaces

While quickemu and quickget are designed for the terminal, a graphical user interface is also available:

Quickgui by Mark Johnson and Yannick Mauray.

Many thanks to Luke Wesley-Holley and Philipp Kiemle for creating the Quickemu icons 🎨

Quickgui for Ubuntu

sudo add-apt-repository ppa:yannick-mauray/quickgui
sudo apt update
sudo apt install quickgui

Ubuntu Guest

quickget will automatically download an Ubuntu release and create the virtual machine configuration.

quickget ubuntu focal
quickemu --vm ubuntu-focal.conf

Complete the installation as normal.
Post-install:
- Install the SPICE agent (spice-vdagent) to enable copy/paste and USB redirection
  - sudo apt install spice-vdagent
- Install the SPICE WebDAV agent (spice-webdavd) to enable file sharing.
  - sudo apt install spice-webdavd

Ubuntu devel (daily-live) images

quickget can also download/refresh devel images via zsync for Ubuntu developers and testers.

quickget ubuntu devel
quickemu --vm ubuntu-devel.conf

You can run quickget ubuntu devel to refresh your daily development image as often as you like, it will even automatically switch to a new series.

Ubuntu Flavours

All the official Ubuntu flavours are supported, just replace ubuntu with your preferred flavour.

kubuntu
lubuntu
ubuntu-budgie
ubuntu-kylin
ubuntu-mate
ubuntu-studio
xubuntu

Other Linux Guests

quickget also supports:

alma
archlinux
debian
elementary
fedora
garuda
kali
kdeneon
linuxmint
nixos
opensuse
oraclelinux
popos
regolith
rockylinux
zorin

Or you can download a Linux image and manually create a VM configuration.

Download a .iso image of a Linux distribution
Create a VM configuration file; for example debian-bullseye.conf

guest_os="linux"
disk_img="debian-bullseye/disk.qcow2"
iso="debian-bullseye/firmware-11.0.0-amd64-DVD-1.iso"

Use quickemu to start the virtual machine:

quickemu --vm debian-bullseye.conf

Complete the installation as normal.
Post-install:
- Install the SPICE agent (spice-vdagent) to enable copy/paste and USB redirection.
- Install the SPICE WebDAV agent (spice-webdavd) to enable file sharing.

BSD Guests

quickget also supports:

freebsd
openbsd

macOS Guest

quickget automatically downloads a macOS recovery image and creates a virtual machine configuration.

quickget macos catalina
quickemu --vm macos-catalina.conf

macOS high-sierra, mojave, catalina, big-sur and monterey are supported.

Use cursor keys and enter key to select the macOS Base System
From macOS Utilities
- Click Disk Utility and Continue
  - On macOS Catalina, Big Sur & Monterey
    - Select Apple Inc. VirtIO Block Media from the list and click Erase.
  - On macOS Mojave and High Sierra
    - Select QEMU HARDDISK Media (~103.08GB) from the list and click Erase.
- Enter a Name: for the disk and click Erase.
- Click Done.
- Close Disk Utility
From macOS Utilities
- Click Reinstall macOS and Continue
Complete the installation as you normally would.
- On the first reboot use cursor keys and enter key to select macOS Installer
- On the subsequent reboots use cursor keys and enter key to select the disk you named

The default macOS configuration looks like this:

guest_os="macos"
img="macos-catalina/RecoveryImage.img"
disk_img="macos-catalina/disk.qcow2"
macos_release="catalina"

guest_os="macos" instructs Quickemu to optimise for macOS.
macos_release="catalina" instructs Quickemu to optimise for a particular macOS release.
- For example VirtIO Network and Memory Ballooning are available in Big Sur and newer, but not previous releases.
- And VirtIO Block Media (disks) are supported/stable in Catalina and newer.

macOS compatibility

There are some considerations when running macOS via Quickemu.

Supported macOS releases:
- High Sierra
- Mojave
- Catalina (Recommended)
- Big Sur
- Monterey
quickemu will automatically download the required OpenCore bootloader and OVMF firmware from OSX-KVM.
Optimised by default, but no GPU acceleration is available.
- Host CPU vendor is detected and guest CPU is optimised accordingly.
- VirtIO Block Media is used for the system disk where supported.
- VirtIO usb-tablet is used for the mouse.
- VirtIO Network (virtio-net) is supported and enabled on macOS Big Sur and newer but previous releases use vmxnet3.
- VirtIO Memory Ballooning is supported and enabled on macOS Big Sur and newer but disabled for other support macOS releases.
USB host and SPICE pass-through is:
- UHCI (USB 2.0) on macOS Catalina and earlier.
- XHCI (USB 3.0) on macOS Big Sur and newer.
Display resolution can only be changed via macOS System Preferences.
Full Duplex audio works on macOS High Sierra, Mojave and Catalina.
- macOS Big Sur and Monterey have no audio at all.
File sharing between guest and host is available via virtio-9p and SPICE webdavd.
Copy/paste via SPICE agent is not available on macOS.

Windows 8.1, 10 & 11 Guests

quickget can automatically download Windows 8.1, Windows 10 and Windows 11 along with the VirtIO drivers for Windows and creates a virtual machine configuration.

quickget windows 11
quickemu --vm windows-11.conf

Complete the installation as you normally would.
All relevant drivers and services should be installed automatically.

Regional versions

By default quickget will download the "English International" release, but you can optionally specify one of the supported languages: For example:

quickget windows 11 "Chinese (Traditional)"

The default Windows 11 configuration looks like this:

guest_os="windows"
disk_img="windows-11/disk.qcow2"
iso="windows-11/Win11_EnglishInternational_x64.iso"
fixed_iso="windows-11/virtio-win.iso"
tpm="on"

guest_os="windows" instructs quickemu to optimise for Windows.
fixed_iso= specifies the ISO image that provides VirtIO drivers.
tpm="on" instructs quickemu to create a software emulated TPM device using swtpm.

BSD Guests

quickemu supports FreeBSD and OpenBSD.

quickget freebsd 13_0
quickemu --vm freebsd-13_0.conf

SPICE

The following features are available while using the SPICE protocol:

Copy/paste between the guest and host
Host file sharing to the guest
USB device redirection

To use SPICE add --display spice to the Quickemu invocation, this requires that the spicy client is installed, available from the spice-client-gtk package in Debian/Ubuntu.

quickemu --vm ubuntu-focal.conf --display spice

Headless

To start a VM with SPICE enabled, but no display attached use --display none. This requires that the spicy client is installed, available from the spice-client-gtk package in Debian/Ubuntu to connect to the running VM

quickemu --vm ubuntu-focal.conf --display none

You can also use the .ports file in the VM directory to lookup what SSH and SPICE ports the VM is connected to.

cat ubuntu-focal/ubuntu-focal.ports

BIOS and EFI

Since Quickemu 2.1.0 efi is the default boot option. If you want to override this behaviour then add the following line to you VM configuration to enable legacy BIOS.

boot="legacy" - Enable Legacy BIOS boot

Tuning CPU cores, RAM & disks

By default, Quickemu will calculate the number of CPUs cores and RAM to allocate to a VM based on the specifications of your host computer. You can override this default behaviour and tune the VM configuration to your liking.

Add additional lines to your virtual machine configuration:

cpu_cores="4" - Specify the number of CPU cores allocated to the VM
ram="4G" - Specify the amount of RAM to allocate to the VM
disk_size="16G" - Specify the size of the virtual disk allocated to the VM

Disk preallocation

Preallocation mode (allowed values: off (default), metadata, falloc, full). An image with preallocated metadata is initially larger but can improve performance when the image needs to grow.

Specify what disk preallocation should be used, if any, when creating the system disk image by adding a line like this to your VM configuration.

preallocation="metadata"

CD-ROM disks

If you want to expose an ISO image from the host to guest add the following line to the VM configuration:

fixed_iso="/path/to/image.iso"

Floppy disks

If you're like Alan Pope you'll probably want to mount a floppy disk image in the guest. To do so add the following line to the VM configuration:

floppy="/path/to/floppy.img"

All File Sharing options will only expose ~/Public (or localised variations) for the current user to the guest VMs.

Samba 🐧 🍏 🪟

If smbd is available on the host, Quickemu will automatically enable the built-in QEMU support for exposing a Samba share from the host to the guest.

You can install the minimal Samba components on Ubuntu using:

sudo apt install --no-install-recommends samba

SPICE WebDAV 🐧 🪟

VirtIO-9P 🐧 🍏

Network port forwarding

Add an additional line to your virtual machine configuration. For example:

port_forwards=("8123:8123" "8888:80")

In the example above:

Port 8123 on the host is forwarded to port 8123 on the guest.
Port 8888 on the host is forwarded to port 80 on the guest.

Bridged networking

Connect your virtual machine to a preconfigured network bridge. Add an additional line to your virtual machine configuration

bridge="br0"

USB redirection

Quickemu supports USB redirection via SPICE pass-through and host pass-through.

SPICE redirection (recommended)

Using SPICE for USB pass-through is easiest as it doesn't require any elevated permission, start Quickemu with --display spice and then select Input -> Select USB Device for redirection from the menu to choose which device(s) you want to attach to the guest.

Host redirection

USB host redirection is not recommended, it is provided purely for backwards compatibility to older versions of Quickemu. Using SPICE is preferred, see above.

Add an additional line to your virtual machine configuration. For example:

usb_devices=("046d:082d" "046d:085e")

In the example above:

The USB device with vendor_id 046d and product_id 082d will be exposed to the guest.
The USB device with vendor_id 046d and product_id 085e will be exposed to the guest.

If the USB devices are not writable, quickemu will display the appropriate commands to modify the USB device(s) access permissions, like this:

 - USB:      Host pass-through requested:
              - Sennheiser Communications EPOS GTW 270 on bus 001 device 005 needs permission changes:
                sudo chown -v root:user /dev/bus/usb/001/005
                ERROR! USB permission changes are required 👆

TPM

Since Quickemu 2.2.0 a software emulated TPM device can be added to guest virtual machines. Just add tpm="on" to your VM configuration. quickget will automatically add this line to Windows 11 virtual machines.

All the options

Here are the usage instructions:

Usage
  quickemu --vm ubuntu.conf

You can also pass optional parameters
  --delete-disk           : Delete the disk image and EFI variables
  --delete-vm             : Delete the entire VM and it's configuration
  --display               : Select display backend. 'sdl' (default), 'gtk', 'none', or 'spice'
  --fullscreen            : Starts VM in full screen mode (Ctl+Alt+f to exit)
  --ignore-msrs-always    : Configure KVM to always ignore unhandled machine-specific registers
  --screen <screen>       : Use specified screen to determine the window size.
  --shortcut              : Create a desktop shortcut
  --snapshot apply <tag>  : Apply/restore a snapshot.
  --snapshot create <tag> : Create a snapshot.
  --snapshot delete <tag> : Delete a snapshot.
  --snapshot info         : Show disk/snapshot info.
  --status-quo            : Do not commit any changes to disk/snapshot.
  --version               : Print version

Desktop shortcuts

Desktop shortcuts can be created for a VM, the shortcuts are saved in ~/.local/share/applications. Here is an example of how to create a shortcut.

quickemu --vm ubuntu-focal-desktop.conf --shortcut

Screen and window size (Linux guests only)

qemu will always default to the primary monitor to display the VM's window.

Without the --screen option, quickemu will look for the size of the smallest monitor, and use a size that fits on said monitor.

The --screen option forces quickemu to use the size of the given monitor to compute the size of the window. It won't use that monitor to display the VM's window if it's not the primary monitor. This is useful if the primary monitor if not the smallest one, and if the VM's window doesn't need to be moved around.

The --screen option is also useful with the --fullscreen option, again because qemu will always use the primary monitor. In order for the fullscreen mode to work properly, the resolution of the VM's window must match the resolution of the screen.

To know which screen to use, type:

xrandr --listmonitors | grep -v Monitors

The command will output something like this:

 0: +*HDMI-0 2560/597x1440/336+1920+0  HDMI-0
 1: +DVI-D-0 1920/527x1080/296+0+0  DVI-D-0

The first number is what needs to be passed to the --screen option.

For example:

quickemu --vm vm.conf --screen 0

The above uses the 2560x1440 screen to compute the size of the window, which Quickemu sizes to 2048x1152. Without the --screen option, Quickemu would have used the 1920x1080 monitor which results in a window size of 1664x936.

References

Useful reference that assisted the development of Quickemu.

README.md Unescape Escape

Quickemu

Introduction

Features

Requirements

Install Quickemu

Ubuntu

Other Linux

Usage

Graphical User Interfaces

Quickgui for Ubuntu

Ubuntu Guest

Ubuntu devel (daily-live) images

Ubuntu Flavours

Other Linux Guests

BSD Guests

macOS Guest

macOS compatibility

Windows 8.1, 10 & 11 Guests

Regional versions

BSD Guests

SPICE

Headless

BIOS and EFI

Tuning CPU cores, RAM & disks

Disk preallocation

CD-ROM disks

Floppy disks

File Sharing

Samba 🐧 🍏 🪟

SPICE WebDAV 🐧 🪟

VirtIO-9P 🐧 🍏

Network port forwarding

Bridged networking

USB redirection

SPICE redirection (recommended)

Host redirection

TPM

All the options

Desktop shortcuts

Screen and window size (Linux guests only)

References

README.md