How to Boot From USB on Windows 11 [Full Guide]

Overview of How to Boot From USB on Windows 11:

Before we go to the tutorial, you need to prepare a reliable USB and a formatting tool - EaseUS Partition Master. This tool stands out during our tests. The reason why we recommend it is that it has a clear interface and is easy to use, making it friendly to beginners.

Now, let's start learning how to boot from a USB on Windows 11. In this article, we divide the whole process into three stages. First, make your USB well-prepared for the bootable USB.

1️⃣Stage 1. Format USB as FAT32

Creating a bootable USB drive has specific file system format requirements; the USB flash drive must be set to FAT32 format first. However, Disk Management and CMD can't format a USB larger than 32 GB to FAT32. You need to turn to a third-party format tool. Our tests verify that EaseUS Partition Master is a stable formatting utility. It can format 64/128/256 GB USB to FAT32. Download this tool and follow the guide below to try it.

Step 1. Launch EaseUS Partition Master, right-click the partition on your external hard drive/USB/SD card which you want to format and choose the "Format" option.

Step 2. Assign a new partition label, file system (NTFS/FAT32/EXT2/EXT3/EXT4/exFAT), and cluster size to the selected partition, then click "OK".

Step 3. In the Warning window, click "Yes" to continue.

Step 4. Click the "Execute 1 Task(s)" button in the top-left corner to review the changes, then click "Apply" to start formatting your external hard drive/USB/SD card.

FAT32 is the best USB format to boot Windows 11; now, let's go to Stage 2 and learn how to create a bootable USB.

2️⃣Stage 2. Create a Bootable USB

Creating a bootable USB can be complicated if you are not a pro; we need to choose trustworthy third-party software. To create a bootable USB, you can turn to EaseUS OS2GO. The following link can help you learn how to use it to create a bootable USB.

🔎Read this article to get more information: How to Create a Bootable USB on Windows 10

3️⃣Stage 3. How to Boot From USB on Windows 11 - 2 Cases

When you need to boot from USB on Windows 11, you may encounter two main situations. One situation is that your computer is working fine, and you can access the startup disk settings from the Windows Settings app portal. The other is when your computer goes wrong and crashes and doesn't work properly, at which point you need to access the boot menu and boot your computer from USB in the BIOS. Now, let's learn about each method.

Case 1. PC Can Start Properly - From Settings

Windows Settings can help you start from a USB; follow the given tutorial below to boot Windows 11 from USB while your computer still runs smoothly.

Step 1. Insert the bootable USB drive into your Windows 11 computer. Press Windows + I to open Settings, and select the "System" > "Recovery" option.

Step 2. Click the Restart Now button to the right of Advanced Startup. In the popup window, Windows 11 will let you know that it's going to restart your device and that you'd better save your work until then.

Step 3. Afterward, your PC will restart and load into the recovery environment. Under the Choose an option window, select the Use a device option.

Step 4. Your PC will list the bootable devices your computer can use, including the USB drive you connected to your PC earlier. Click and select it.

Finally, your computer can reboot and boot from the USB drive you set up.

Case 2. PC Fails to Start - From Boot Menu

When your computer doesn't boot, you need to access BIOS to boot Windows 11 from USB. Attach the USB flash drive to the PC where you want to clean install Windows 11. Then, restart your PC while pressing the Shift key to boot into the Windows Recovery Environment (WinRE). Select to boot from the USB drive in the Windows Recovery Environment.

Here's the step by step guide:

Step 1. Connect the bootable USB drive to the correct USB port. Then, press the Power button to boot your laptop/PC. When it starts loading, keep tapping the appropriate Boot Menu key, such as ESC, F2, F8, or F10 (The key can vary depending on the motherboard's manufacturer and model) to enter the BIOS setup.

Step 2. In the boot menu, look for the Boot order option and move the bootable USB drive that you want to boot from to the top of the list.

Step 3. When you confirm your changes/settings, press the F10 key to save and exit. Upon exiting, your PC will automatically boot from the USB flash drive.

Conclusion

If you want to start Windows 11/10 from a USB flash drive but don't know how to do it, then you can refer to the method in this tutorial to solve this problem easily. First, prepare a qualified USB flash drive and format it into FAT32; create a bootable USB; finally, change the boot order and set the bootable USB as the boot drive. Then, you can boot Windows 11 from the USB. It's worth mentioning that you'll need to access the BIOS to boot from USB if the computer isn't working properly. 

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How to Boot From USB on Windows 11 FAQs

There are many situations where you may wish to use a USB to boot Windows 11 on your computer, perhaps to boot a new Windows system, for troubleshooting, or to enjoy the same configuration on multiple PCs. Here are some more related questions and answers. Read on.

1. Why is Windows 11 not booting from USB?

Not all USB drives can be considered bootable USB devices. Regular USB drives are not bootable by default. So the reasons why Windows 11 cannot boot from USB are as follows:

• USB drive is not a bootable device
• Bootable USB drive not showing up in BIOS
• USB drive is too old
• USB drive is damaged by mistake
• USB drive format does not support
• Wrong boot order

2. How to boot Windows 11 from USB in BIOS?

Attach the USB flash drive to the PC on which you want to clean install Windows 11. Then, restart the PC while holding the Shift key to boot into the Windows Recovery Environment (WinRE). Choose to boot from the USB drive once in the Windows Recovery Environment.

3. When do we need to boot from a USB on Windows 11?

The reasons for booting the system from USB are as follows:

• Boot the new Windows system. Boot the new system on a USB stick to prevent it from affecting the version you are running.
• To troubleshoot. The second reason is that your computer operating system does not start properly, shows a blue screen on Windows 11, or keeps crashing due to viruses, malware, etc. At this point, you need a bootable USB disk to boot your computer properly.
• Booting the new computer from the USB boot disk with the old system will allow you to enjoy the same computer configuration.