Since installing macOS Catalina or previous versions of macOS isn’t much supported by Apple, you’re likely to encounter some problems at any time. These problems include from the time you begin installing macOS such as not booting, mouse and keyboard not working or else. They are really frustrating and can take quite a time and work to solve. But don’t worry, we won’t let you alone. We’re here for help. Continue reading with us so we can fix the problem.
After you’ve installed macOS Catalina on VirtualBox on your Windows PC, by default, you’ll have a small screen resolution. This screen resolution isn’t proper for whatever you want to do. This known issue appears when you switch the macOS to full-screen resolution mode but you’ll see a small resolution despite your large screen means with black edges. This problem is one of the most important and annoying things you’ll ever see.
Most users will accept this and some even think it is by default so it is unchangeable. But in actual, it isn’t. If you’ve attempted to fix macOS Catalina screen resolution by yourself and failed to do. No worries, we have caught you up. This problem isn’t solved that way, there’s a better and easier way to solve it. The way we’ll fix it is with some commands which we have tested and worked with and also the resolutions are completely working so there’s no need for you to dig.
Fix macOS Catalina Small Screen Resolution
As the installation is somehow not much complicated, this process will also won’t be much tricky. If you’ve installed the previous versions of macOS on VMware or VirtualBox, you know this problem is from the past. It isn’t new in any case. You can work with the current situation of the macOS virtual machine but it’s isn’t much proper to work or test. This problem also exists in macOS Catalina or previous versions installed on VMware. However, the method is different to solve than this one. There, you have the VMware Tools and you’ll simply install the VMware tools which will fix many of the problems such as sound, internet, screen resolution and more.
In this method, what we’re going to do is pull up some commands that we’ll provide you. After that, edit it for your specific macOS virtual machine and apply it on command prompt. It’s super easy. The main thing is, you should have a working and completey installed macOS Catalina. This also works for previous versions of macOS such as macOS Catalina, macOS Mojave, macOS High Sierra, but it’s not sure whether the screen resolutions of this will work for those, you may check it yourself.
Note: Make sure you’re using the latest version of VirtualBox. If you are not, update it to the highest version.
Step 1. Close macOS Catalina Virtual Machine
At this point, you need to power off the virtual machine completely, it’s very important. If you forget this, the other steps will not work. Since this is easy, there’s no need for shot for this.
Step 2. Edit Code for Small Screen Resolution
After you’ve completed the previous step, now you’ll need to do a few editing with the code for screen resolution. In this case, first of all, download it and then open it and edit the name with your virtual machine name.
The proper screen resolution is important to set. So choose one of the resolutions from below or from the notepad file. Don’t write the screen resolution, write 1 2 3 for the specific screen resolution you’d like to change.
- 1280×720 (HD)
- 1920×1080 (FHD)
- 2560×1440 (QHD)
Step 3. Apply Code on Command Prompt
For this time, open Command Prompt.
When it opened, copy and paste the command, actually the first line of it on the command prompt.
This line of code will change the screen resolution so be careful. After choosing the appropriate screen resolution which is fit to your screen, copy the next line of command and paste it in command prompt and hit Enter.
Step 4. Start macOS Catalina Virtual Machine
Done? Good, now start the virtual machine and you’ll see the screen resolution will automatically be fixed. Hope this solved the problem.
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