I have to install one or more virtual machine to develop and test my new programs. As I must follow the policy of my company, I can not choose VM Ware as the VM infrastructure, and I have to use the free VirtualBox (from SUN).

I choose Ubuntu as my Linux test environment, and downloaded Super Ubuntu 2008-11 from internet, all processes were ok.

When I started the Ubuntu in VirtualBox, I found that the screen resolution can not exceeds 800*600, it is too small for a programmer. Yes, I have to resolve this problem.

The solution is very cheap and easy: installing VirtualBox Linux Additions!

In VirtualBox, click Devices->Install Guest Additions and the guest OS should recognize a new CD. Open a terminal and run this command:

sudo sh /media/cdrom/VBoxLinuxAdditions-x86.run

After installed, your Ubuntu’s resolution will changed go with resizing of VirtualBox window, isn’t it fantastic?

There are some links might be useful for you:

http://ubuntu-tutorials.com/2007/10/13/installing-guest-additions-for-ubuntu-guests-in-virtualbox/

http://tombuntu.com/index.php/2008/09/22/install-virtualbox-2-guest-additions-in-ubuntu/