This is a short guide on how to install VirtualBox 3.0.6 guest additions in Fedora 11. It is always a good practice to update your system before installing VirtualBox guest additions, so let us do just that. Open a terminal in Fedora guest, thus say, Login as root: $: su Check for updates and install as necessary #: yum check-update #: yum update Note that when I installed Fedora 11, I selected Development machine, so most of the common development tools are already installed by default. But if you have selected Destkop machine, then you have to do the following: #: yum -y install gcc kernel-devel You probably need to reboot after all the updates. It is now time to install the Virtual Box guest additions. From the host machine, using Virtual Box main application do, "Devices > Install Guest Additions..." or You should note that in the guest machine, Fedora 11, will mount the guest addition automatically. Now it is time to install the much needed software. Open a t...