How To VirtualBox

How to Enter Full Screen Mode in macOS in VirtualBox

Written by John

The macOS Mojave is one of the coolest operating systems out there. It is loaded with many great features including the new file system, the APFS, which replaced Apple’s HFS. This gives increased copy and writes speeds and increased security with inbuilt encryption. The interface of the operating system also received some serious tweaks that made it more user-friendly and easy to use compared to the previous iOSs. These great operating systems are perfect for Mac users but what if you are a Windows user and want to enjoy these VirtualBox allows you to run your preferred operating system in your Windows PC.

In this case, you can enjoy using the macOS Mojave or High Sierra on a virtual machine created using this VirtualBox inside your Windows PC. To make the experience even better, VirtualBox allows its users to enter full screen mode. With macOS High Sierra or Mojave in full screen, you will be just like the person using a Mac somewhere.

How to Enter Full Screen mode in MacOS in VirtualBox

Step 1: Download the macOS High Sierra or Mojave virtual image file and the Oracle VM VirtualBox software. Install VirtualBox and then create a new virtual machine.

Step 2: Click on the High Sierra or Mojave virtual machine and copy your virtual machine’s name, then close your VirtualBox.

Virtual Machine's Name

Step 3: Open "Resolution key". In the part of the resolution key screen written “Your virtual machine name”, type in the name of the virtual machine. In this case, we will type in “macOS Mojave 10.14”. In the space after the "Efi graphics resolution", replace the X resolution written there with what you prefer. In this case, we will be using 1920x1080. In the next line, type in the words: “1920x1080" is my resolution” without the quotes.

Resolution Key: Download Link

Resolution Key

Step 4: Open Command Prompt by clicking on the Windows button. Type “cmd” in the search box and click on Enter. Right click on "Command Prompt" and click on “Run as administrator”. Leave it open.

Open Command Prompt (cmd)

Step 6: Highlight and copy the part written in the Resolution key. Paste this to the open CMD window. Click Enter.

cd “c:/Program Files\oracle\virtualbox”
VBoxManage setextradata “macOS Mojave 10.14” VBoxInternal2/EfiGraphicsResolution 1920x1080

Add Commands in cmd

Step 7: Open the Oracle VM VirtualBox program and highlight the operating system. Click on the “Start” button. This will open the High Sierra virtual machine.

Step 8: You can change to scale mode or full screen mode any time you want. To do this, go to the view screen and click on “Full Screen Mode” or “Scaled Mode” to change to the respective state. What the host key means is right Ctrl. Use the “Host+F” and “Host+C” shortcuts to open the full screen and scaled modes respectively.

Enter Full Screen Mode in macOS Mojave in VirtualBox

Done! macOS Mojave in VirtualBox with full resolution

macOS Mojave with full Resolution

Using macOS High Sierra or Mojave may prove useful to many people. From cross-platform app developers to people who love trying new things, many will find VirtualBox really useful. With it, you will be able to open and run macOS applications just as Mac users do. The full screen mode makes the experience even better with users able to have the true feeling of Mac users without interruptions from the Windows system. You never have to see a Windows notifications as you spend time in your macOS high Sierra or Mojave! How nice! Give this a try today!

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  • the experience is very laggy and slow even at the default resolution. Why would you want to increase it and create a more demanding graphic environment? To my knowledge you cant get a MacOS Virtual Machine to recognize a Graphic Card and the max Video Memory is 128 (or 256) which simply isnt enough.

    I dedicated 6 of my 12 cores and 8GB of ram to my VM and its still slow a as a snail.

  • I was able to change the resolution to 3840×2160 and full screen. The problem with that is now everything is small. I have tried to change the scale settings but then most of the right side is off my screen. Any suggestions?

  • Hi John,

    I’m so grateful to you for this setup, but like other users I’m struggling to get out of 1024×728

    I’ve tried your code and it appears to run without error, but seems to have no effect on the guest.

    I’ve tried both 1920×1080 and 2560×1440.

    I shut down the guest, close virtual box, run the commands, don’t get any errors, but no change in the guest.

    Any help is most appreciated.

  • Works great. Two things…best way to get 3440X1440 Widescreen to work? do you increase the Hard Drive Space from the 84GB it says in system settings.

  • Para que/ For who want in 1366 x 768, I managed to with this code:
    In CMD:
    C:Program FilesOracleVirtualBox

    VBoxManage.exe setextradata “Mac VM” CustomVideoMode1 1366x768x32

  • I spent the whole day trying to resolve the resolution issue. And found this article the most useful one. It saved me from further investigation. I tried this method before and it did not work. Later on I tried to follow the author’s another article step by step, most important one is to issue vboxmanage command to set different stuff for macOS Mojave. Once that is done, the setting of resolution is working. So please read other articles by this author, you’ll appreciate the work done by the author.

  • To whom the presented method did not fit, there is an alternative, the name of the machine is written without quotes.
    VBoxManage setextradata Your Virtual Machine Name VBoxInternal2/EfiHorizontalResolution 1920
    VBoxManage setextradata Your Virtual Machine Name VBoxInternal2/EfiVerticalResolution 1080

    • I tried for hours to get a good resolution. My host is a Manjaro KDE Kernel 5.1 System. Your idea and tipp helped. With this I could work with any resolution MacOS is able to do. Thanks a lot!

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