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: 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.

cd "C:\Program Files\Oracle\Virtualbox"
VBoxManage setextradata “Your Virtual Machine Name” VBoxInternal2/EfiGraphicsResolution X

X: 1280x720, 1920x1080, 2048x1080, 2560x1440, 3840x2160, 1280x800, 1280x1024, 1440x900, 1600x900

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.

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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February 28, 2020 8:50 am

I tried the steps to change the resolution to 1920×1080. Scaled Mode works fine, but the Full-screen mode is strange. Everything is really big and blurry, so it doesn’t fit the screen, and you need vertical scroll bar and horizontal scroll bar.
I have no idea what’s happening?

February 28, 2020 11:33 am
Reply to  Mel

Never mind, I was scaling it 200%…

February 24, 2020 3:41 pm

Thank you ,it worked .Now trying to install the tools to make the system more responsive any link to help with this .

January 26, 2020 6:50 am

thank you. it worked!

September 11, 2019 8:10 am

Thank you so much for this guide. Was trying to get the right resolution, like, forever!

August 19, 2019 9:54 am

Thanks A LOT !

Jake Gilllman
Jake Gilllman
July 19, 2019 9:44 pm

Hi i want to change my resolution because i have just got a new monitor but i keep geting an error i tried to edit it in the .vbox file but it keeps reseting. the current vm resolution is 1280×720 and i want to change it to 2560×1440

September 2, 2019 12:45 am
Reply to  Jake Gilllman

Do these steps and make sure that is the same location where you stored it and that’s the same name you called your macOS VM, also make sure your VM is closed means the whole program:
cd “c:/Program Files\oracle\virtualbox”
VBoxManage setextradata “macOS Mojave 10.14” VBoxInternal2/EfiGraphicsResolution 2560×1440

and then start the VM and change the resolution in the settings if it hasn’t adjusted itself.

June 12, 2019 7:24 pm

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.

June 19, 2019 1:15 pm
Reply to  Anthony

My installation, even if not mind-blowingly fast, is nothing close to laggy. It’s workable, let me put it that way. I have no problems runnung Catalina on 4 of my 8 cores and 16Gb of RAM dedicated to VB.
I know that Geekbench scores prove nothing, but my system demonstrates 4100/12000 for single core/multi core tests respectively. Not tooooo shabby.
All in 1920×1200 resolution. Actually, I haven’t noticed any change in performance compared to the standard 1024×800

May 22, 2019 9:00 pm

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?

May 2, 2019 10:09 pm