VirtualBox

After installing the virtual machine in VirtualBox, I want to change the virtual machine’s screen resolution in the virtual machine. So I click the VirtualBox Manager or Virtual Machine’s Devices —> Insert Guest Additions CD image… menu item. But it shows the error message like Unable to insert the virtual optical disk C:\Program Files\Oracle\VirtualBox\VBoxGuestAdditions.iso into […]

This article will tell you how to copy a VirtualBox virtual machine to another hard disk or computer when your disk has fewer disk spaces step by step.

This article will tell you how to share folders between VirtualBox Host and Guest virtual machines to copy files between the 2 machine OS. The host OS is Windows10, and the guest OS can be Windows10 & macOS.

When I install mac os high sierra, Mojave, Catalina, or Big Sur on my VirtualBox virtual machine. I meet an error that is can not select the target disk to install the mac os. After investigating I finally find a method to fix this issue. This article will tell you how to fix it step

Virtualbox is open-source free software that can host Windows, Linux, macOS, and other operating systems in a virtual machine. It is owned by Oracle company. It can be installed and run on macOS, Linux, and Windows. In this article, we will focus on how to install Virtualbox on macOS, and we will create a virtual

After installing a Linux ( Ubuntu or CentOS ) or Windows in Oracle VirtualBox, you should want to enable the copy & paste function between the virtual machine and the host machine. This article will tell you how to do it.

In this example, I install a CentOS in a VirtualBox virtual machine. Then I click the virtual machine to focus it, and then I click Devices —> Insert Guest Additions CD image… menu item in the virtual machine top menu bar to install additions image like below picture. But during the installation process, I meet

I run VirtualBox in my Mac OS. And I install CentOS Linux as a virtual machine OS in VirtualBox. When I start the CentOS virtual machine, and when I focus on the virtual machine by clicking the mouse key in it, I can not go back to my Mac OS easily, this makes me crazy.

After installing Ubuntu in VirtualBox and log in to the Ubuntu OS, I find the ubuntu os screen resolution is configured at 800*600, this is not a good screen resolution for usage. I want to change it to at least 1920*1080. After investigate I finally find the method to change it.

This article will show you how to install mac os ( include both mac os high sierra & Mojave ) in VirtualBox virtual machine. And the host os is windows 10. Below are the steps, you can follow them.