As I understand it, Windows XP doesn't support UEFI. Ubuntu 12.04 does. I am currently running Ubuntu 12.04 in legacy boot mode and would like to convert to UEFI and GPT. However, I don't want to cause problems for my Windows XP system that is running in a VirtualBox VM under Ubuntu 12.04. Does anyone know whether Ubuntu 12.04 utilizing UEFI and GPT can host a Windows XP system running in VirtualBox?