expose rich configuration options. Quickemu is a wrapper for [QEMU](https://www.qemu.org/). See the video where I explain some of my motivations for creating this script.
We have a Discord for this project: [![Discord](https://img.shields.io/discord/712850672223125565?color=0C306A&label=WimpysWorld%20Discord&logo=Discord&logoColor=ffffff&style=flat-square)](https://discord.gg/sNmz3uw)
There are some considerations when running macOS via Quickemu.
*`quickemu` will automatically download the required [Clover EFI bootloader](https://sourceforge.net/projects/cloverefiboot/) and OVMF firmware from [the macOS-Simple-KVM project](https://github.com/foxlet/macOS-Simple-KVM).
* **macOS 10.14.3 or newer is supported**:
* [VirtIO block devices QEMU standard VGA are supported](https://www.kraxel.org/blog/2019/06/macos-qemu-guest/) since macOS 10.14.3 (Mohave).
* [VirtIO `usb-tablet` devices are supported](http://philjordan.eu/osx-virt/) since macOS 10.11 (El Capitan).
* [vmxnet3 network devices are supported](https://github.com/foxlet/macOS-Simple-KVM/blob/master/docs/guide-networking.md) since macOS 10.11 (El Capitan).
* Running macOS on QEMU required the guest CPU is set to `Penryn`.
* This is a very old architecture, [so to unlock higher CPU performance; AVX, AES-NI, SSE et al are enabled](https://www.nicksherlock.com/2017/10/passthrough-of-advanced-cpu-features-for-macos-high-sierra-guests/).
* UHCI USB (USB 2.0) is the fastest supported.
* USB pass-through has not been tested.
You can use `quickemu` to run a macOS virtual machine.
`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 wont't use that monitor to display the VM's window if it's not the primary monitor**. This is usefull 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 usefull 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
```
will use my big screen to compute the size of the window, and make it 2048x1152. Without the `--screen` option, it would have used the smallest monitor and make the window 1664x936.