Fix VirtualBox Error, Unable to insert the virtual optical disk, Unable to install guest additions by following the solutions mentioned in this post.

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

The VirtualBox Guest Additions gives a performance boost and extra features to your hosts. Follow these steps to install this package on a GUI-less Ubuntu server guest.

How you install the Guest Additions will depend upon what operating system is running the Guest, and if you’re using VirtualBox with a GUI desktop or a console-only server.

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 ...