Table Of Content
How to Fix macOS Catalina Screen Resolution on VirtualBox. This happens after you install, when you switch to the full-screen resolution mode, wait for a precious wallpaper to cover your entire screen, but instead, the wallpaper remains at the same resolution instead the side screen will be covered will the black screen. It does have some Mac-specific functionality, such as support for 5K iMac displays, mixed retina, and non-retina configurations. Fusion includes Unity Mode, which hides the Windows desktop interface and lets you launch Windows applications from the Dock as if the apps are regular apps to macOS. VirtualBox allows you to install NT and Server 2003 versions as well as older versions such as Windows 3.x or even IBM OS / 2 on the 2018 computers of the last generation. Apple users have the same pleasure to use VirtualBox on their machines and the ability to host a Mac VM client session is a plus for any developer there.
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1- Download Mac OS
Mac OS is a computer operating system developed by Apple. This is a operating system with beautiful interface, however, to own a the computer of Apple with this operating system, you need to use a lot of money, normally with the double price than that of common computers using Windows operating system. Fortunately, you can experience the Mac OS right on your computer by installing a Mac OS virtual machine on VirtualBox.
Below is the list of Mac OS versions released in recent years:
| Mac OS Version | Name | Release Date |
| 10.10 | Yosemite | June 2014 |
| 10.11 | El Capitan | September 30, 2015 |
| 10.12 | Sierra | June 12, 2016 |
| 10.13 | High Sierra | June 5, 2017 |
In this post, I will show you how to install the Mac OS on VirtualBox. First of all, please download an installer.
After finishing downloading, there is one file:
Extract the file that you have just downloaded in a folder.
2- Create Mac OS Virtual Machine
On the VirtualBox, create a new virtual machine.
Enter a name for the virtual machine and select a Mac OS version suitable for the Mac OS version that you have downloaded..
Mac OS operating systems need a large amount of RAM to work, You should provide it with about 4GB RAM.
The Mac OS file downloaded by you in the above step is a complete operating system and you can be willing to use without installation. Therefore, on the VirtualBox, you only need to point to this postion of this file.
OK, your Mac OS virtual machine has been created.
You can carry out other configurations for Mac OS, for example, Network configuration, specifying the quantity of Processors,..
3- Configure VBoxManage
After you create VirtualBox virtual machine, the Meta information of this virtual machine will be found in the folder (Depending on your operating system):
- LINUX (Ubuntu,..):/home/{user}/VirtualBox VMs
- WINDOWS:C:/Users/{user}/VirtualBox VMs
There are some advanced configurations that you can perform via the interface of VirtualBox, and you must carry out it via a command:
Virtualbox Mac Retina Resolution
Replace 'Your-VM-Name' by your virtual machine name. Your virtual machine name can be found in the 'Setting > General > Basic' (Like the following illustration).
On the Linux (Ubuntu,..), open Terminal windows and CD to go to your Mac OS virtual machine directory. If you use the Windows operating system, open the CMD windows with Administrator privilege and CD to go to the Mac OS virtual machine directory.
Perform the above commands respectively (after having replaced 'Your-VM-Name'):
Virtualbox Mac Retina Slow
OK, all the commands have been performed successfully.
4- Start the Mac OS virtual machine
Virtualbox Mac Retina
Press on 'Start' button to start yourMac OS virtual machine:
Enter username/password (to be used to enter your Mac OS virtual machine).
OK, at this moment, you have installed Mac OS Virtual Machine on VirtualBox successfully.
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