How to install Virtualbox guest additions on Ubuntu

This is a reminder to myself on how to install guest additions for Ubuntu 9.10 as a guest when using Sun VirtualBox. I’m currently using Sun Virtual Box 3, feel free to use it as is.
Update and upgrade the distribution.

Install the linux headers to and build essentials to enable you to compile

Now look up at the top left of the VirtualBox window and click devices then click install guest additions.

You’ll notice that a CD icon will appear on your desktop called VBOXADDITION_3 (I’m currently running version 3 of VBOX, yours may be different.)

Use the command prompt you opened earlier

Exit the terminal unmount the CD and reboot your Ubuntu Guest OS. At this point I usually shutdown and take a snapshot but thats entirely up to yourself.

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