To install VirtualBox Guest Additions on your Windows 11/10 machine, you can follow the step-by-step instructions provided in this post.

How to install VirtualBox guest additions Now is the time to install the VirtualBox Guest Additions, which will allow the virtual machine to run full screen and improve its performance.

2] Insert Guest Additions VirtualBox sometimes fails to open guest session and encounters VERR_NOT_FOUND VirtualBox error, we need to add to the problematic virtual machine.

Each Linux system will be slightly different, but the Tombuntu blog's instructions for installing VirtualBox Guest Additions in Ubuntu hold mostly true: head to where the ISO is mounted as a CD ...

To install the Guest Additions (which downloads automatically with VirtualBox), you need to be running the VM and choose Devices –> Install Guest Additions from the VirtualBox main menu.

I'm installing it as a VMWare guest (Windows 7 host OS) and I'd like to use LUKS/dm-crypt to get a feel for full-disk encryption.