![]() ![]() This one is really useful as you might want to share some files from the host. Why not use more? Depending on your system, add the arguments -e RAM=8 -e CPU_STRING=16 to make it much, much faster! Time to hack!īy default, the VM is only created with 4 cores and 4 Gb of RAM. It’s just a single, large file inside /var/lib/docker:įrom here on, I suggest creating a text file where you store versions of the docker run command for your convenience. The first thing I suggest doing is extracting the macOS disk image so that you’ll have a persistent installation with all your work and settings while you’re experimenting with VM settings. It’s really simple point-and click work and you’ll soon be greeted with your own macOS installation!įrom here on it’s up to you how you want to customize your image. You have to follow the README’s “additional boot instructions” part to format the virtual disk image and install macOS on it (the image contains pre-mounted Big Sur installation media). docker run starts a brand new container, but you can start the same one later via docker start.Īfter booting up, you’ll be greeted with the recovery installer of macOS: If you shut down the machine from inside macOS, the container would stop. It’s very convenient!īasically, while the container is running, the QEMU virtual machine will keep on running. Also it sets up an environment variable which tells the container which X display to use.įor managing Docker containers, I suggest using the Docker extension for Visual Studio code if you don’t want to deal with the command line. It exposes the 10022 port inside the container at 50922 port in your host machine for SSH access (optional). What does this do? It pulls a prebuilt Big Sur image, forwards your / dev/kvm device and an X11 socket into the container. I suggest choosing Big Sur which is still supported, but not as new as Monterey which may have some emulation issues. ![]() Choose your OS version (Catalina, Big Sur, Monterey). It’s insanely customizable: you can get started quickly via a single docker run command, but depending on your needs, you can customize several aspects of how the virtual machine is run, like screen resolution, shared folders, USB passthrough, VNC connection and so on. In short, Docker-OSX runs an Arch Linux container that executes QEMU and sets up preinstalled or vanilla macOS images for you. It has a nice, long README! Commands are subject to change, so please refer to the README for the latest version. Get acquainted with the Docker-OSX download page. ![]() For installing Docker, follow the installation guide. You might have luck with podman, though it interacts with your system in a different way than Docker does. So have a HDD/SSD ready with plenty of free space.Īs we’ll be using the Docker-OSX project, you’ll need to pull, run and maybe create Docker images locally. My image file grew to 170 Gb after a few days of use. QEMU “qcow” images will expand like crazy once you start installing software, until they hit a preset limit of 200 Gb. You’ll need tens of gigabytes of disk space. If you want to run Xcode, have at least 16Gb of RAM installed so that you can allocate about 8Gb to the virtual machine. That kind of emulation can be orders of magnitude slower, though on today’s machines this is not an issue when emulating DOOM. With KVM, x86 virtualization offers near-native performance, which means that CPU calls from the Mac virtual machine are routed directly to your processor in a secure way without any kind of emulation penalty.Īlthough graphics and general UI responsiveness will be slow, but with KVM, software will run blazing fast provided that you have some strong CPU like a more recent Intel i7 or Ryzen 7.Ĭompare the efficiency of KVM with for example DOSBox, where full emulation is needed because of DOS programs using low-level BIOS interrupts and real CPU mode. ![]() Then start the libvirtd systemd service and check if the kvm kernel module is running. Enter fullscreen mode Exit fullscreen mode ![]()
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