This article was tested under Ubuntu Server 12.04 & 12.10
if you have installed new setup of ubuntu server, root is disabled by default.
[code lang=”bash”]sudo passwd root
update system and install essentials for the installation process
[code lang=”bash”]apt-get update
apt-get install gcc make dkms build-essential
Install VirtualBox Guest Additions
Mount your guest addition
you need to be as root or ‘su’ and then type:
[code lang=”bash”]cd /opt
mount /dev/cdrom /opt/cdrom
if you have errors, check the reason. on ubuntu server, Xorg related errors are acceptable 😉
(Could not find the X.org or XFree86 Window System)
Reboot, and you’ have VirtualBox Guest Additions on Ubuntu Server!