Okay first let me tell you that you can properly install Ubuntu along with existing windows without loosing any data!!! I.e you can use 2 OSs properly installed!! And about the USB boot,you will have to make a bootable USB(having the iso immage of the Linux/Ubuntu you want to install) using an application for doing so(Google it for a windows app) then you have to enter the bios setup and change the boot-order to USB as 1st boot device and save and exit. Insert the USB and restart.Linux will start.

Discover how easy it is to install Ubuntu desktop onto your laptop or PC computer, from either a DVD or a USB flash drive. Step by step beginner's guide to show you how to easily and quickly make Ubuntu bootable USB in Windows. How to create a bootable USB of Ubuntu. Install Ubuntu. This post shows you how to install Ubuntu Server from USB drive. Ubuntu Server USB install is much simpler and in fact more convenient than from a CD. How to write a USB stick with Windows. How to write a USB stick with Windows.

If I understand the question correctly, the thing you are worried about is losing your files when installing Ubuntu. There are three solutions to this problem: Running from a USB stick As this is specifically what you asked for, I will describe this method first: •. • Turn off your computer, insert the USB stick and turn it on again.

• You may have to enter BIOS setup and change the boot order to make the USB stick higher priority than your hard drive. The exact process varies from PC to PC, but it is described for the Dell Inspiron Duo. Rapidshare Medical Avaxhome. Photoshop Cs3 Portable For Windows Xp.

• Your computer should automatically start Ubuntu off the USB stick now. There are however a few downsides to this if you're planning to use Ubuntu on a daily basis: • Running an operating system on a USB stick is significantly slower than running it on a hard drive, and you will notice this. • The available space on a USB stick will also be significantly less than on a hard drive, and with daily use you can may quickly run out of free space. Installing Ubuntu inside Windows A second method is to install Ubuntu from within Windows using. The installer will install Ubuntu alongside your existing Windows installation, so that your existing data is preserved, and you can easily uninstall it like any other application. When you start your computer, you will be able to choose if you want to boot into Ubuntu or Windows.

Installing Ubuntu normally By default, the regular Ubuntu CD installer will repartition your hard drive in such a way that all existing data is preserved. So even if you install it this way, you won't lose your files in Windows, and you will get the option to boot into Ubuntu or Windows when you start your computer. This is very similar to installing Ubuntu inside Windows, except that you can't uninstall it as easily.