How to Create a Windows Bootable USB Drive

What you need to create a bootable Windows USB

A bootable USB drive is a flash drive that contains Windows installation files and can start your computer directly from the USB port. You need three things: a USB drive with at least 8 GB of space (16 GB is safer), a computer that already has Windows or another operating system running, and the Windows installation media creation tool from Microsoft.

The process takes about 20 to 30 minutes from start to finish. The USB drive will be erased during this process, so move any files you want to keep to another location first. After you create the bootable drive, you can use it to install Windows on a new computer, repair a broken Windows installation, or recover a system that won't start.

Key Takeaways

You download the Media Creation Tool directly from Microsoft's website, which is the official and safest way to make a bootable Windows USB.
The tool erases your USB drive completely, so back up any files on it before you start.
The entire process — downloading the tool, selecting your Windows version, and writing to the USB — takes 20 to 30 minutes on a typical internet connection.
After creation, you restart your computer, change the boot order in BIOS or UEFI to boot from USB first, and Windows setup begins automatically.
If your USB drive does not appear in the tool, try a different USB port, restart the tool, or try a different USB drive.

Download the Media Creation Tool from Microsoft

Go to microsoft.com/software-download/windows in your web browser. You will see a blue button labeled "Download now" under "Create Windows installation media." Click that button. The file is called MediaCreationToolW11.exe (for Windows 11) or MediaCreationToolW10.exe (for Windows 10), depending on which version you want.

Save the file to your desktop or Downloads folder so you can find it easily. Once the download finishes, double-click the file to open it. Windows will ask if you want to allow this app to make changes to your device — click "Yes." The tool will take a few seconds to load.

Select your Windows version and language

When the Media Creation Tool opens, you will see a screen that says "What do you want to do?" Select the option that says "Create installation media for another PC." Click "Next."

The tool will then ask you to choose your language, Windows edition, and architecture (32-bit or 64-bit). For most modern computers, choose 64-bit. If you are not sure which edition you need, choose "Windows 11" or "Windows 10" without specifying a particular edition — the tool will let you choose during installation. Click "Next" when you have made your selections.

Insert your USB drive and select it in the tool

Plug your USB drive into an open USB port on your computer. Wait a few seconds for Windows to recognize it. Back in the Media Creation Tool, you will see a screen asking "Which media do you want to use?" Select "USB flash drive" and click "Next."

The tool will show you a list of USB drives connected to your computer. Find your USB drive in the list — it will show the drive letter (like "D:" or "E:") and the size. Click on it to select it, then click "Next." The tool will warn you that everything on this drive will be deleted. This is normal. Click "Next" to continue.

Wait for the tool to write Windows to your USB drive

The Media Creation Tool will now download Windows files from Microsoft's servers and write them to your USB drive. This step takes 10 to 20 minutes depending on your internet speed. You will see a progress bar that shows how far along the process is. Do not unplug the USB drive or close the tool during this time.

When the process finishes, you will see a message that says "Your USB flash drive is ready." Click "Finish" to close the tool. Your bootable USB drive is now complete and ready to use.

Use your bootable USB to start a computer

Plug the USB drive into the computer you want to install or repair Windows on. Restart that computer. As soon as it starts to boot, hold down the key that opens the boot menu. This key varies by computer manufacturer — common keys are F12, F2, Esc, or Del. You will see a message on the screen during startup that tells you which key to press (for example, "Press F12 for boot menu").

When the boot menu appears, select your USB drive from the list. It will usually be labeled with the USB drive's name or size. Select it and press Enter. The computer will boot from the USB drive, and Windows setup will start automatically. Follow the on-screen prompts to install Windows or repair your system.

Troubleshoot if your USB drive does not appear

If the Media Creation Tool does not show your USB drive in the list, try these steps in order. First, unplug the USB drive, wait 10 seconds, and plug it into a different USB port on your computer. Some USB ports are faster or more reliable than others. Restart the Media Creation Tool and check the list again.

If the drive still does not appear, close the Media Creation Tool completely, restart your computer, and open the tool again. Sometimes Windows needs a moment to recognize a new USB drive. If you have tried two different USB ports and restarted the tool and the drive still does not show up, try a different USB drive — your original drive may be faulty or incompatible with the tool.

Frequently Asked Questions

Can I use the same USB drive to install Windows on multiple computers?

Yes. Once you create the bootable USB drive, you can use it on as many computers as you want. The drive itself is not tied to any single computer. You can also keep it and use it again months or years later to install Windows on a different machine.

What if I need Windows 10 instead of Windows 11?

When you run the Media Creation Tool, you choose which version of Windows you want before the tool downloads anything. If you want Windows 10, select "Windows 10" on the version selection screen. Microsoft still provides the Media Creation Tool for Windows 10 on the same download page.

Do I need internet connected to the computer I am installing Windows on?

No. The bootable USB drive contains all the files needed to install Windows. However, you will need internet after installation to download drivers and updates. During setup, Windows will ask if you want to connect to Wi-Fi, but you can skip this step and connect later.

Can I use this USB drive for other things after I create it?

You can, but you will need to erase it and reformat it first. The bootable USB drive is formatted in a special way that makes it work for Windows installation. If you want to use it for regular file storage, right-click the drive in File Explorer, select "Format," and choose "NTFS" as the file system.

What if the computer does not boot from the USB drive even though I selected it?

The most common reason is that the computer's boot order was not actually changed, or it reverted to the hard drive. Restart the computer, enter the boot menu again, and make sure you select the USB drive. Some computers require you to press Enter after selecting it. If you are still having trouble, restart the computer and try pressing a different key to enter the boot menu — the correct key may be different from what the startup message showed.

This guide is for general information only and is not medical, financial, legal, or other professional advice. For decisions specific to your situation, consult a qualified professional. See our Editorial Policy.