Create and manage your macOS virtual machines with ease.

A solution for creating and managing macOS virtual machines on Ubuntu. It prepares the environment, comes with an integrated EFI and uses Reims vGPU as its virtual GPU foundation, with terminal menus to create, start, shut down, delete and maintain VMs.

No. You don’t need prior knowledge of Hackintosh, EFI, OpenCore, Kexts or ACPI to get started.

Your computer does need to meet the requirements, and you need to follow the installation and Ubuntu setup instructions.

Yes. The EFI is part of OSX-REIMS, follows Universo Hackintosh standards and has more than 400 customizations. Every VM you create gets its own copy, with a unique identity.

Yes, if its disk is in QCOW2 format, like the disk of an OSX-PROXMOX VM. With the Import VM disk option, OSX-REIMS copies the disk into a new VM with its own boot disk and identity; the original file is not changed.

Since the identity is new, Apple services may ask you to sign in again. Whether it works depends on the macOS installed on the disk.

No. Each VM keeps its own settings: memory, processors, screen (window or full screen), display server, OpenCore, GPU, refresh rate, network and sound. You answer on the first start and, from then on, OSX-REIMS shows the summary and asks only whether to start the VM, change a setting or cancel.

Starting a VM that is always used the same way becomes a single keypress.

Yes, with nested virtualization on for that VM: the processor macOS sees then carries Intel VT-x, so Docker, VirtualBox and the Android emulator have something to run on.

This needs an Intel computer, with nested virtualization enabled in KVM (Ubuntu’s default). On AMD processors, macOS has no way to virtualize.

Yes. Sound is on in every VM: macOS plays through Ubuntu’s sound server, from Ventura to Tahoe, with no driver to install, and VMs created from 0.6.0 on also get OpenCore’s boot chime.

The network is NAT by default: the VM reaches the internet through the computer’s address. With the bridge turned on once in Maintenance, a VM can get an address of its own on the network, reachable from the other computers. The bridge needs a wired network port; Wi-Fi will not do.

Yes. In Backup & Restore, on the main menu, the whole VM — macOS disk, OpenCore, identity and settings — becomes a single file in /opt/osx-reims/backup. It can be restored over the VM itself or as a new VM, with a new MAC address.

The backup is kept on the same disk as the VMs: it protects you from a mistake or an update gone wrong, not from the disk failing. Copy the files somewhere else to keep them safe.

Yes. One VM can be set to start with the session, and OSX-REIMS offers to turn on Ubuntu’s automatic login, so that starting the machine ends in macOS.

The VM window opens on the graphical session, so it starts after the login — that is why it is two settings, and automatic login is never turned on without being asked for.

Ubuntu Desktop 26.04 LTS, 64-bit (x86_64), with hardware virtualization enabled and KVM, a GPU and driver with Vulkan support, an internet connection, and space for the environment and the VMs.

That is no longer the starting point. Reims vGPU presents a virtual GPU to macOS and runs graphics operations through Vulkan on Ubuntu, which reduces dependence on native macOS support for the physical GPU.

The GPU needs Vulkan 1.2 or later support and a compatible driver on Ubuntu. On NVIDIA cards, use NVIDIA’s full driver: the open nouveau driver (NVK) lacks what Reims vGPU needs to run the VM.

No. Vulkan 1.2 is the technical foundation, not a guarantee. Whether it works also depends on the driver, the GPU model, virtualization and the rest of the system.

Intel integrated graphics, Intel Arc, NVIDIA GeForce/RTX and AMD Radeon are families considered by the architecture, with no certification of specific models.

The screenshots show macOS Ventura 13.7.8, Sonoma 14.8.9, Sequoia 15.8 and Tahoe 26.6.2 running. One of the Tahoe videos shows the VM being created and the Recovery steps, without the full installation.

When creating VMs, OSX-REIMS offers Ventura, Sonoma, Sequoia and Tahoe. Offering a version does not mean guaranteed compatibility.

Universo Hackintosh members with an active subscription to the Hackintosh - Avançado tier or to the Hackintosh - vGPU OS tier, above it. Membership is handled on the YouTube channel, through the official link.

In the #osx-reims channel on the Universo Hackintosh Discord server: click Gerar meu link de download in the pinned message of the channel, and the bot replies, visible only to you, with a personal download link. The package is not distributed by this site.

The link is valid for a single download, only downloads for your Discord account (the page asks you to sign in) and expires after 10 minutes if unused. Up to 3 downloads can be started every 24 hours. The full rules and the data recorded are in Download terms and privacy, in the site footer.

The OSX-REIMS .deb installation package for Ubuntu and access to the #osx-reims channel on Discord, where the package is downloaded through the Gerar meu link de download button.

Members also get access to the live streams, with more than 200 hours of technical content demonstrated in practice, full access to the Discord with more than 25 technical and community support rooms, access to the OpenCore BASE EFIs, always kept up to date, and other benefits.

Just accept our invitation to join our Discord server (Discord invite (opens in a new tab)).

After joining, remember to connect your Discord profile to the YouTube account you used to become a member of the channel: Discord then recognizes you as a member and assigns the member role automatically, which unlocks access to the rooms.

No. OSX-REIMS is an experimental project, for study and testing, and it does not replace an Apple computer. Features that rely on Apple hardware, services and integrations may not work, or may stop working with any update.

If you need macOS for work, day to day, with stability and support, the honest recommendation is to buy a Mac.

No. The difference is large and expected. Even with graphics acceleration through Vulkan, a VM with a paravirtualized GPU does not deliver a Mac’s performance: virtualization has a cost in graphics, disk and power.

The result also varies a lot with the computer, the GPU and the drivers. The demos on this page show what the project does, not what your machine will do.

No. They are independent projects, by different authors. OSX-REIMS is not affiliated with, sponsored or approved by the Reims vGPU authors, does not belong to that project and takes no part in its development.

Reims vGPU is third-party open-source software: OSX-REIMS downloads it from the original repository and builds it on your computer, under its authors’ license. The name OSX-REIMS indicates that the solution was built to work with that technology, not a connection to the project.

Yes. OSX-REIMS is at version 0.6.0, in alpha, and is provided without any warranty and without technical support. Reims vGPU also describes itself as alpha. Functions and behavior may change between versions.

No. The membership gives access to the package and the Discord channels, but it does not include technical support or any guarantee that it will work.

The #osx-reims-chat channel is a space for members to help each other: you can describe the problem there and share the logs from osx-reims doctor for the community to look at. Help is voluntary, and there is no guarantee of a reply, a timeframe or a fix. Support requests by email are not answered.