How to Make a USB Bootable.
How to Make a USB Bootable Method 1: Using Command Prompt on Windows 1 Insert a USB flash drive into your computer. Your USB flash drive should plug into one of the rectangular USB ports on your computer's housing. Flash drives only fit one way, so don't force the drive if it doesn't fit. The USB flash drive should be at least 8 gigabytes in space so that it can accommodate most operating system installation files. 2 Open Start . Click the Windows logo in the bottom-left corner of the screen. 3 Type in command prompt . This will search your computer for the Command Prompt program. 4 Right-click Command Prompt . It's a black box at the top of the Start window. This will prompt a drop-down menu. If your mouse doesn't have a right-click button, click the right side of the mouse, or use two fingers to click the mouse. If your computer uses a trackpad instead of a mouse, use two fingers to tap the trackpad or p