How to create a Bootable Windows 8.x (8 or 8.1) USB Disk from ISO file.

Last updated on January 8th, 2016

Nowadays many computer manufacturers don’t include an optical media (disk) reader on their products (especially on Laptops) so if you want to perform a clean installation of Windows 8 or to troubleshoot your computer problems, you must have in hands a Windows 8 (or 8.1) USB bootable disk.
In this tutorial you can find step by step instructions on how to create a bootable Windows 8 (or 8.1) USB disk, from a Windows 8 ISO image file.





1. A Windows 8 or Windows 8.1 ISO image file.


2. Rufus USB Boot Creator Utility.

3. An EMPTY USB Disk with at least 4GB storage space.


How to create a Windows 7, 8 or 8.1 USB Bootable Drive.

Step 1: Download RUFUS USB Boot Creator Utility*.

* Rufus is an excellent utility that helps create bootable USB flash drives, such as USB keys/pendrives, memory sticks, etc.


1. Go to the official Rufus download page and download RUFUS USB Bootable Creator Utility to your computer.



Step 2. Create a bootable Windows 8 (8.1) USB flash drive.

1. Remove all USB storage drives from your computer and plug an EMPTY* USB stick (minimum 4GB) to an empty USB port.

Attention: DO NOT leave your files on the USB stick, because all files will be erased during this operation.



2. Now double-click to run “rufus” application.


When Rufus utility starts:

3. Choose the empty USB stick that you plugged in your computer.



4. At “Create a bootable disk using” option, select “ISO Image”.



5. Then click the icon next to “Create a bootable disk using  – ISO Image” option.



6. Select the Windows 8 or Windows 8.1 ISO file from your computer (e.g. Windows.iso) and choose “Open”.



7. When done, press “Start”.



8. Read carefully the warning message and press “OK”.



— Wait until Rufus utility erases your USB stick and transfers Windows 8 ISO files to it. —



9. When Rufus operation is completed, close Rufus utility, unplug the USB stick and use it to troubleshoot Windows 8 or to perform a clean OS installation.



Notice:  In order to boot from the USB disk, you must set the USB as first boot device from your BIOS settings.To do that:

  1. Power On your computer and press "DEL" or "F1" or "F2" or "F10" to enter BIOS (CMOS) setup utility.
    (The way to enter into BIOS Settings depends on the computer manufacturer).
  2. Inside BIOS menu, find the "Boot Order" setting.
    (This setting is commonly found inside "Advanced BIOS Features" menu).
  3. At “Boot Order” setting, set the USB disk (e.g. USB-HDD) as the first boot device.
  4. Save and exit from BIOS settings.


That's it!

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