If you have a copy of Windows 7 installation media as an ISO (disk image) you may want to put it on a flash drive. You might think that you’d be able to just click and drag the file onto the flash drive and be done, but that isn’t the case! Here’s how to do it
First, have a Windows 7 ISO (duh)
Next, download and install Microsoft’s ISO tool here. (That is a direct link, originally found the link here. If you’re doing this on Windows XP, go to that page and scroll down to “For Windows XP Users” to find two more downloads you will need.)
When you open the program, it will look like this.