I was running 11.04 as my main OS untill I installed Win Xp Pro. 50 GiB Ubuntu and 100 GiB Win Xp Pro. Now when ever I boot my computer (Acer Extensa 5620) it AUTOMATICALLY goes into the Win Xp Pro OS. So I have no idea how to access all of my Ubuntu files and programs etc. This is a really big problem as I have yet to hook up Win Xp Pro to the internet. It is an older OS and it has made things very difficult. So I really need to be able to switch OS partitions.