How to fix screen resolution in macOS Catalina in VirtualBox: detailed instructions

Fix macos catalina screen resolution in virtualbox.

macOS Catalina is an operating system developed by Apple that offers many new features and improvements. However, if you are trying to use Catalina in VirtualBox, you may encounter a problem with the screen resolution. But don’t worry, in this article we will tell you how to easily fix this known limitation.

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The first step to fix the screen resolution issue in Catalina in VirtualBox is to install VirtualBox guest add-ons. Guest add-ons are specialized software that provides additional features and functionality to a virtual machine.

To install guest add-ons, you need to start a virtual machine with Catalina in VirtualBox, and then select “Install Guest Add-ons” from the Devices menu. After that, follow the on-screen instructions to install the add-ons.

After installing the guest add-ons, restart the virtual machine. You will now be able to customize the screen resolution in Catalina. To do this, select “Show all resolutions” from the “Display” menu in the Catalina system settings. Then select the desired resolution and click “Apply”.

Congratulations! You have successfully fixed the screen resolution issue in macOS Catalina in VirtualBox. Now you can enjoy all the new features and enhancements of Catalina at full resolution.

How to install macOS Catalina in VirtualBox

Installing macOS Catalina in VirtualBox allows you to run Mac OS on your computer without having to purchase an Apple device. Here are step-by-step instructions to help you install macOS Catalina in VirtualBox.

Download the latest version of VirtualBox from the official Oracle website.
Download the macOS Catalina image from Apple’s official website. This can be in the form of a .dmg or .iso file.
Install VirtualBox by following the installer instructions.
Open VirtualBox and click on the “Create a new virtual machine” button. Enter a name for the virtual machine and select the operating system type “Mac OS X” and version “macOS 10.15 Catalina” (if there is no such version, select the most recent one).
Select the size of RAM (at least 4GB is recommended) and create a new virtual hard disk. Select “Dynamically allocated” and set the disk size (at least 100 GB is recommended).
Open the virtual machine settings and go to the “System” tab. Enable the “IO APIC” option.
Go to the “Display” tab and set the video memory to the maximum value.
On the “Control Center” tab, click “Shared Folders” to configure file sharing between the virtual machine and the primary system.
Start the virtual machine and select the macOS Catalina image you downloaded earlier.
Install macOS Catalina by following the installer’s instructions.

Once the installation is complete, you will be able to use macOS Catalina in VirtualBox on your computer. Note that performance may be slower than on a real Apple device, so some features may run slower.Changing the screen resolution in macOS Catalina

macOS Catalina is an operating system developed by Apple. It offers many new features and improvements, but users sometimes encounter the problem of incorrect screen resolution when running a virtual machine in VirtualBox. In this instruction, let’s see how to fix this problem.

Step 1: Log into VirtualBox and select the desired virtual machine.

Step 2: Right click on the virtual machine and select “Settings”.

Step 3: In the window that opens, click on the “Screen” tab.

Step 4: Expand the “Controller Graphics” section and check the box next to “VBoxVGA Graphics Controller”.

Step 5: Select the “System” tab and go to the “Video Output” section.

Step 6: Check the box next to “Video Memory Capacity”, and set the video memory level of your choice.

Step 7: Click the “Apply” button, and close the “Settings” window.

Step 8: Start the virtual machine and check the screen resolution - it should be fixed.

Now you know how to change the screen resolution in macOS Catalina in VirtualBox and enjoy running the virtual machine with the correct resolution.

Screen resolution problems in VirtualBox

A virtual machine in VirtualBox is a convenient way to run an operating system on your computer without having to install it directly on your hard disk. However, sometimes users encounter screen resolution issues in VirtualBox, especially when using macOS Catalina. In this article, we will explain how to fix this problem.

Possible causes of the problem

Screen resolution issues in VirtualBox can be caused by several factors:

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Lack of or improper installation of guest add-ons in the virtual machine.
Limited graphics adapter settings in VirtualBox.
Incorrect operating system configuration in the virtual machine.

Steps to fix the problem

To fix screen resolution issues in VirtualBox in macOS Catalina, follow these steps:

Step 1: Update VirtualBox and Guest Add-ons

The first step is recommended to update VirtualBox to the latest version. Then make sure that the guest add-ons are installed and up to date in the virtual machine.

Step 2: Check and configure graphics adapter settings

Go to the virtual machine settings in VirtualBox and select the “Display” section. Make sure that the graphics controller is set to “VBoxSVGA” or “VBoxVGA”. Also set the maximum amount of video memory.

Step 3: Configure the operating system in the virtual machine

Inside the virtual machine, open the screen settings and select the resolution that matches your monitor. If necessary, also adjust the screen refresh rate.

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Step 4: Restart the virtual machine

After making all the necessary changes, restart the virtual machine and check if the screen resolution has changed.

Conclusion

By following the above steps, you should be able to fix the screen resolution issue in VirtualBox. If the problem persists, make sure that your system supports the installed virtual environment and do more research or ask for help from the VirtualBox community.

Detailed instructions on how to fix screen resolution

Virtual machines running macOS Catalina in VirtualBox may have an issue with incorrect screen resolution, which can make it difficult to use the operating system. These instructions will describe how to fix the screen resolution in macOS Catalina in VirtualBox.

Step 1: Make sure you have the latest version of VirtualBox installed. If not, update it to the latest version.

Step 2: Download and install the Guest Operating System Additions (Guest Additions) in your virtual machine. To do this:

In the virtual machine window, select the Devices menu item.
From the drop-down menu, select “Insert Guest Additions CD Image”.
A window will open with the contents of the Guest Additions disk.
Run the installation by following the on-screen instructions.
Reboot the virtual machine after installing the additions.

Step 3: After rebooting the virtual machine, open a terminal in macOS Catalina and run the following command:

sudo nano /Library/Preferences/SystemConfiguration/com.apple.Boot.plist You will need to enter the administrator password to continue.

Step 4: Add the following code to the file that opens:

Graphics Mode1920x1080x32 Here you can specify the desired screen resolution instead of “1920x1080x32” if it is different. For example, “1280x800x32”.

Step 5: Save your changes by pressing Control + X, then Y and Enter. Then reboot the virtual machine.

Step 6: After the reboot, the screen resolution should be corrected. If it is not, repeat the previous steps and make sure you have correctly specified the required resolution in step 4.

You should now be able to use macOS Catalina in VirtualBox with the correct screen resolution.

FAQ:

How do I fix the screen resolution in macOS Catalina in VirtualBox?

To fix the screen resolution in macOS Catalina in VirtualBox, you need to follow a few steps. First, install VirtualBox guest add-ons on the virtual machine. Then reboot the virtual machine and start macOS Catalina. Once the virtual machine has booted, open Terminal (Console) and run the following command: “sudo rm -rf /Library/Preferences/com.apple.windowserver.plist”. After that, reboot the virtual machine again and the screen resolution should be fixed.

How do I install VirtualBox Guest Add-ons on a virtual machine?

To install VirtualBox Guest Additions on a virtual machine, first open the VirtualBox menu and select “Devices”. Then select “Insert Guest Additions CD Image” to load the guest additions CD image. After that, open Terminal in the virtual machine and run the command “cd /Volumes/VBOXADDITIONS_” and then “sudo ./VBoxDarwinAdditions.pkg”. Follow the installation wizard and reboot the virtual machine when finished.

What should I do if the screen resolution still does not change after installing VirtualBox guest additions?

If the screen resolution still does not change after installing VirtualBox guest add-ons, try the following steps. First, open the “Terminal” (Console) of the virtual machine and run the command “sudo nano /Library/Preferences/SystemConfiguration/com.apple.Boot.plist”. In the editor that opens, find the “Graphics Mode” line and replace the 800x600 value with the desired resolution (e.g. 1920x1080). Save the changes and reboot the virtual machine. This may be able to fix the screen resolution issue.

What is the recommended screen resolution to use in macOS Catalina in VirtualBox?

It is recommended to use a screen resolution that matches your physical monitor and at which you feel comfortable. It is generally recommended to use a resolution of 1920x1080, as this is the standard resolution for most monitors. However, depending on your personal preferences and the capabilities of your monitor, you may choose a different resolution that you prefer.