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Once you have done that, in the virtual machine’s file manager locate the Guest Additions CD image in the CD drive, then run Setup or, you may just see this screenshot, attached, when you Insert Guest additions CD Image if so, just hit the Run button, and you don’t need to try to find the correct file on the CD Image to actually run the guest additions. Once the Extension Pack is added into the VirtualBox manager, start up your virtual machine and then you can add it to the virtual machine: Devices > Insert Guest Additions CD Image …. The Extension Pack includes the Guest Additions. On this page,, you can download the current version for your host and also the correct Extension Pack. You should download the Extension Pack from Oracle for the version of VirtualBox you are using. If the Extension Pack is not listed there, it needs to be added. Then go to FIle > Preferences > Extensions. This application, like the set of Guest Additions, is completely free, so it is not necessary to spend any money to get the most out of this application to manage virtual machines.Did you first install the guest additions in VirtualBox itself, before trying to install it in the virtual machine? You do that in the Oracle VM VirtualBox Manager screen, that is what starts up when you run VirtualBox.
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VirtualBox is a completely free application managed by the Oracle company. Unlike other applications to manage virtual machines, such as VMware, where it is necessary to have a paid version to be able to enjoy a perfect integration between the host and virtual operating systems, with VirtualBox it is not necessary.
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The set of drivers and applications that are part of Guest Additions are located in the VirtualBox installation directory and, depending on the operating system, we must perform some steps or others, steps that we will show you later. Guest Additions is a set of device drivers and system applications that are responsible for optimizing the operating system to offer the best possible performance and usability.
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