Part 1: What Do You Need?
Part 2: Create a Bootable USB Drive from the ISO file
When you don’t have an installation disc of Windows 8.1 it might be very difficult to reach the Advanced Startup Option, this Wiki will guide you through the process of downloading and burning a copy of Windows 8.1.
- You cannot use a Windows 8 Retail key to download Windows 8.1, not even if you have upgraded from Windows 8 to Windows 8.1 You will have to download the application for downloading Windows 8.
Part 3: Boot Windows 8/8.1 from the Bootable USB Drive
- You cannot download Windows 8.1 or 8 64 bits on a 32 bits computer or the other way around, it will always download the same architecture of your current system.
- To download Windows 8.1 use this link:http://go.microsoft.com/fwlink/p/?LinkId=271128.
- To download Windows 8 use this link:http://go.microsoft.com/fwlink/p/?LinkID=317630.
Usually, whenever a new OS or OS update release happens, Microsoft will allow users to download it from the installer or download it as ISO to install them whenever we want using DVD/USB media.
The Booting Specialist
When Windows 8.1 was released this week, Microsoft made it available through Windows Store. However, there are ways to download Windows 8.1 ISO from Microsoft. Neowin posted the below steps which you can follow to download the ISO and install it from USB stick. Head over to http://windows.microsoft.com/en-us/windows-8/upgrade-product-key-only.
Scroll down and click Install Windows 8 (This will trigger the installer assistant). Enter your Windows 8, Windows 8 Pro or Windows 8 Upgrade product key, confirm that you will be downloading the bits for the version you paid for.
As soon as it starts downloading, close the installer assistant from the (X) in the top-right corner.
Go back to the Microsoft Windows upgrade page, click Install Windows 8.1, and download the newer installer assistant.
- Run the newer install assistant. When the download is complete, you can choose to install the OS right-then, or you can choose the option: Install by creating media.
- This option will allow you to create a USB/DVD media.
- Select USB drive if you want to install the installation files to a USB stick or select the ISO option if you want to obtain the ISO.
How to Install Windows 8 or 8.1 From a USB Device
Enjoy the Windows 8.1 experience after installing from the downloaded ISO. Neowin has even got some screenshots of the process. Check them out from the link below.
by Jenefey AaronUpdated on 2021-12-22 / Update for Fix Windows. It happens more often that it should be: your computer is failing you, and you can’t use the CDs or DVD installer because there’s no optical drive.
What can you do to get your back on your feet? You can use a USB drive to boot or reinstall your Windows. And for today’s tech world, a USB drive is a better solution because we can safely say that almost every computer on earth has USB ports.
If you are ready to get your hands dirty, let’s start. As the title suggested, you need an empty flash drive or any USB storage that you can put your hands on.
It should be 4 GB in size if you plan to install the 32-bit version of Windows 8 or 8.1, or 8 GB drive for the 64-bit version. If your drive is not empty, a pre-formatting process is suggested. Second, you need the Windows 8 or 8.1 installers in the form of DVD or ISO (recommended) along with the product key.
Either you already have it as part of your computer purchase, or you could purchase a new copy. If your installer is in the form of an optical disc, you need to create the ISO version of it.
Since your computer doesn’t have the optical drive, you need access to another computer that does. There are tons of applications that can help you turn a DVD into an ISO file such as BurnAware Free.
And needless to say, you need a working computer to boot the drive and install or repair Windows 8 or 8.1.
Unfortunately, due to the different file structure, you can’t just copy an ISO file to USB drive and hope it to boot.
Booting Windows 8 Setup on a UEFI-Based System
You need to create a bootable drive. Fortunately, creating the bootable drive is not difficult. You need a free tool from Microsoft called Windows 7 USB/DVD Download Tool.
Even though the tool bears the name Windows 7, it works perfectly fine with Windows 8 and 8.1 ISO images.
Note: The tool’s filename is Windows7-USB-DVD-Download-Tool-Installer-en-US.exe, it is 2.6 MB in size, and comes from wudt.codeplex.com.
Install the tool after you finish downloading it. And depending on what version the Windows version of the computer where you install the tool, you might be required to install another free tool from Microsoft called .NET Framework.
Then run the tool and locate the ISO file by clicking Browse. Choose it as the source file.
Then click Next to continue.