Many people prefer to use the Windows DVD-ROM to install windows. They also come with a built-in windows installer which allows you to download and install the operating system. Bootable USB devices work very well in this case because they not only allow you to install windows easily. Many people prefer to use the Microsoft windows installer instead of the bootable usb drive as it's easier to use and doesn't involve inserting or copying the actual disc. If your Windows machine isn't too old, you may be able to install windows by using the Windows CD-ROM that came with your computer. This will help you restore any unsaved data in case of damage to the external drive when formatting or reinstalling Windows. Before you begin, insert the USB device into your USB port and backup any data you've stored on the USB device.

Next, connect the external data device into your computer, either via the USB port on the side or a FireWire port.

To make a bootable USB external drive for Windows Vista, you should first have Windows Vista or 7 running on your computer.

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