That ISO can be loaded into virtual CD drives to install Guest Additions on guest VMs. The host doesn't run the Guest Additions software (obviously, because it's not a guest) but you can have the ISO on it. Your host very likely has a Guest Additions ISO installed. The main reason why extensions exist is separation of the open-source part of VirtualBox from its proprietary components, like USB 2.0 and 3.0 support (these are provided as a non-free extension which is only unpaid for non-commercial use). This is about the host and its virtualization capabilities. It's an interface for extending VirtualBox with additional functionality. Well, it's easy to get confused about this.Įxtensions are something completely different. What version of the guest additions is really running?.Are the guest additions bound to Virtualbox (so there's only one version, regardless of how many VMs are running) or are they bound to each VM?.So they are different, and neither corresponds to the version indicated by the first method. I can't tell if it's true.Īnyway, if I check my two virtual machines with this method I see that one has 5.2.8_KernelUbuntu r120774, while the other has 6.0.0 r127566. Look at the Guest Additions version number.Ī user commented that this answer indicates what is running, and not simply what is installed, so this should be the best way to check it. Open the Session Information window (either with Machine->Session Information or with Host- N) If I do it I see 6.1.36r152435, which is indeed what I think I installed, and what I would like to have.īut there's also an answer on Ask Ubuntu explaining how to check what version is being used: This shows you the extensions which are currently installed, and enables you to remove a package or add a new package. In the window that displays, go to the Extensions category. To view the extension packs that are currently installed, start the VirtualBox Manager, as shown in Section 1.6, “Starting Oracle VM VirtualBox”. "Auto-resize guest display" works for both, but copy and paste works only for the first one, so I was thinking about reinstalling the Guest Additions, but I've realized that I don't even understand what version is installed. I have VirtualBox 6.1.36 installed on Windows 10, and I'm using it to run two virtual machines, one with Xubuntu 18.04 and the other with Xubuntu 22.04.
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