Vista - Windows 7 or Windows 8 Bootable USB

1. First step in creating a bootable USB is to create a disk with Windows Vista/Windows 7/Windows 8 or Obtain the ISO from elsewhere. Install a free burning program (you can find plenty on the internet, but I recommend you to use IMGBurn). You need one that can create ISO files like IMGBurn. If you received your Windows 7 as a downloadable ISO file skip to Step 2.
   Insert your Windows 7 /Windows 8/ Windows Vista DVD. Open your new burning program. Look for an option such as “Copy to Image” or “Create Image.” If prompted, select your DVD drive as the source.
   Save your ISO file. Choose an easy to remember name and location for the file. The ISO you make will be equal in size to the disc you are copying. This means it can take up several gigabytes of space on your hard drive. Be sure you have enough storage available.
   Creating the ISO can take a long time, depending on the speed of your computer and DVD drive.
2. Download Windows 7 USB/DVD Download Tool. This is available for free from Microsoft. Despite its name, this tool works with Windows Vista ISOs or Windows 8 as well. You can run this tool on virtually any version of Windows.
3. Select the Source file for the bootable USB. This is the ISO that you created or downloaded in the first section. Click Next.
4. Select USB device. You are given the option to either burn to a DVD or create a USB device. For this guide, click USB Device.
5. Choose your USB device. Make sure that your flash drive is connected correctly. You will need at least 4GB space on your flash drive to copy over the Windows installation.
6. Wait while program works. The program will format the USB drive to boot correctly, then copy the ISO file onto the drive. The copying process can take up to 20 minutes to complete, depending on the current speed of your machine. On faster computers can take less than 10 minutes.

Now you’ve created your Bootable USB and is ready to be used.