If you have a netbook and want to upgrade it to Windows 7, you may be wondering how to do it without an external DVD drive. This tutorial will show you how to create a USB drive that installs Windows 7 through 2 free tools and is completely easy to use.

Installing Windows 7 from a flash drive is basically like installing it from a DVD. The most important part of the job is to set up the flash drive so that it becomes a boot device with the operating system on it. Here we will look at a few utilities that allow you to easily create a bootable USB drive and then copy the Windows 7 installation onto it.

Note : You will need to have a flash drive of at least 4GB to accommodate the installation files.