By Delia / Last update May 17, 2021

Case: I want to install Windows 10 from USB flash drive

"Hello guys, I bought a new flash drive, a Cruzer Blade 16GB to make a fresh install on Windows 10, but the Windows doesn’t boot from flash drive. Am I doing something wrong?"

Why boot Windows 10 from USB flash drive? The above case described one of the most common intentions, i.e. a clean installing or upgrading of Windows 10.

Besides, when you encounter system errors that seriously affect normal operation, you may also want to boot from a recovery USB for troubleshooting or factory resetting.

No matter what your purpose is, a bootable USB drive is the prerequisite. Keep reading to learn what USB can you use for what situation, and how to boot Windows 10 from it.

Overview for bootable USB in Windows 10

>> For installing a clean copy of Windows 10 or reparing installing Windows 10 with an in-place upgrade on the same or another PC, you could download MediaCreationTool from Microsoft, and use it to create an installation USB.

create installation media

>> For troubleshooting or reinstalling Windows 10 on the same computer, you could use Windows built-in utility to create a recovery USB. Remember to tick "Back up system files to the recovery drive."

create recovery drive

*You can find detailed steps with screenshots to create Windows 10 bootable USB.

Is it necessary to format USB for Windows 10 installation or recovery?

If fact, Windows MediaCreationTool will reformat the drive automatically, and Recovery Drive will create a FAT32 formatted USB that can boot in both BIOS-based and UEFI-based PCs. So you don’t need to do it manually.

Will installation media or recovery drive erase your data?

Reinstalling Windows from USB recovery drive will remove your files, while clean installing Windows 10 from installation USB should not (but there are still users who have lost some files in the process).

In any case, it’s recommended to backup important data in advance to avoid any unwanted data loss.

After creating a bootable USB drive for Windows 10, you can try following methods to boot from it.

Approach 1. Boot Windows 10 from USB flash drive (inside Windows)

If you can still log into Windows normally, then the steps are rather simple.

☛ For a recovery USB drive:

1. Connect the USB, click on Start > Settings > Update & Security > Recovery in Windows 10, and you will find a Restart now button under Advanced startup section.

advanced options

2. Tap it and the computer will reboot to Windows 10 recovery environment, you can then choose Recover from a USB to reinstall Windows 10, or choose Advanced options for troubleshooting.

☛ For an installation USB drive:

1. You can connect the previously created installation USB, and select it in File Explorer.

2. Double-click setup.exe in the root directory to run the installer, and follow the wizard to install Windows 10 updates (i.e. in-place upgrade).

setup

Approach 2. Boot Windows 10 from USB flash drive (at startup)

Whether it’s an installation USB or recovery USB, you can boot from it during startup to rescue a faulty computer. The difference is that the former can be created on a normally working PC and used on another PC, while the latter can usually only be used on the computer where it was created.

To repair or install Windows 10 from USB during startup, you can change BIOS/UEFI settings to make the bootable media on top of the boot order list.

1. Connect the USB drive, power on the PC and press the required key to enter BIOS/UEFI. The key is usually F1, F2, F10, F12, Delete. etc. If you are not sure, read the motherboard manual or search the PC model on Internet.

2. Then, find the boot menu and make the bootable USB flash drive the first boot option among all the devices. Save the settings and exit. The computer should restart and boot from the selected USB drive automatically.

change boot order

3. After selecting the keyboard layout, you can proceed to the next step. With an installation USB, you will be lead to the process of clean installation; and with a recovery USB, you will enter Windows recovery environment for further opertion.

Note: USB booting on UEFI systems requires the “Secure Boot” option to be disabled. If your computer uses UEFI, you need to temporarily disable the option. In addition to “Secure Boot”, it may be called by other names like “Legacy Boot”, “Legacy Support”, “CSM”, “Launch CSM”, etc.

Easy alternative: create bootable media to restore system from startup

If you don't necessarily need to reinstall Windows 10, but want to effectively fix system problem and get your computer working properly, you can try this alternative to save time and effort.

AOMEI Backupper Standard is a free backup & restore program with comprehensive functions. It works on all Windows OS and all brands of computers, and the operation is much easier than Windows built-in tools.

♦ With the System Backup feature, you can create an image of operating system and schedule backup to run it daily, weekly, monthly, etc. To save storage space, you can also perform incremental or differential backup to back up only changed files each time.
♦ The Create Bootable Media tool enables you to make USB bootable. Thus when a computer fails to boot, you can use the USB to boot it to WinPE, and restore the system to an earlier normal state to solve all the problems.
♦ The System Restore can also be done easily and efficiently. AOMEI Backupper supports you to restore Windows 10 from USB, or transfer system image to new hard drive easily.
♦ In addition, if you want to restore system to different hardware, you can also upgrade to Professional edition to enjoy the Universal Restore feature.

Download the free standard edition to have a try:

Download Freeware Win 10/8.1/8/7/XP
Secure Download

Preparations:

Install the software, choose Backup > System Backup to create a system image on removable devices or network location. You can also add a schedule to automate the backup on regular basis.

▶ How to create Windows 10 bootable USB:

1. Go to Tools tab and select Create Bootable Media under Common Tools.

create bootable media

2. Select Windows PE and created disc will support booting from both legacy/MBR and UEFI/GPT. Click Next to continue.

winpe

3. Select the bootable media. Here choose USB Boot Device as an example and click Next.

select usb

When the process is complete, you will get a bootable USB flash drive.

▶ How to restore Windows 10 from USB flash drive:

1. Insert the bootable USB, enter BIOS/UEFI and choose to boot from it. When the computer boot into WinPE, AOMEI Backupper will pop out, you can then select Restore > Select Task/Select Image File to locate the system backup.

select system image

2. Choose Restore this system backup and click Next.

restore this system backup

3. Confirm the operation and Start Restore.

start restore

Tips:

  • If this system image is created on another computer with different hardware, please tick Universal Restore (supported by Pro edition) to make sure Windows 10 can boot properly after recovery.
  • If you only want to perform Windows 10 recovery on the same computer, then you don’t necessarily have to create a bootable media, just select Recovery Environment in Tools tab, and Enable the boot option of AOMEI Backupper recovery environment. It works just as bootable USB but can only take effect on the current PC.

Conclusion

Whether your purpose is system reinstallation or troubleshooting, you could boot Windows 10 from USB flash drive. This post introduced 2 types of bootable USB drive, and the approaches to boot from them.

If you find both the methods are complicated, you can also use the effective alternative, AOMEI Backupper to create bootable media and perform system recovery. As an all-around data protection solution, it also offers functions to backup individual files, folders, partitions or the entire disk in daily use.

In addition to backup and restore, AOMEI Backupper is also a powerful disk clone software. It allows you to migrate hard drive to SSD, or transfer OS to another hard drive.