Method 1: Using the Windows USB/DVD Download Tool
The Windows USB/DVD Download Tool is a free and official tool from Microsoft that can help you to create a bootable USB drive from a Windows ISO file. You can download it from https://www.microsoft.com/en-us/download/windows-usb-dvd-download-tool. To use this tool, you will need the following:
A Windows 8.1 ISO file. You can download it from https://www.microsoft.com/en-us/software-download/windows8ISO. Make sure to choose the correct edition and language for your computer.
A USB flash drive with at least 4 GB of free space. Note that all the data on the USB drive will be erased during the process, so make sure to back up any important files before proceeding.
A computer running Windows 7 or later.
Once you have the required items, follow these steps to create a Windows 8.1 ISO USB bootable drive:
Install and run the Windows USB/DVD Download Tool on your computer.
Browse and select the Windows 8.1 ISO file that you downloaded earlier.
Click on "Next" and choose "USB device" as the media type.
Select your USB flash drive from the drop-down list and click on "Begin copying".
Wait for the tool to format and copy the files to your USB drive. This may take several minutes depending on the speed of your USB drive and computer.
When the process is complete, click on "Finish" and close the tool.
Congratulations! You have successfully created a Windows 8.1 ISO USB bootable drive using the Windows USB/DVD Download Tool. You can now use it to install or reinstall Windows 8.1 on your computer.
Method 2: Using Rufus
Rufus is a free and open-source software that can help you to create a bootable USB drive from various types of image files, including Windows ISO files. You can download it from https://rufus.ie/. To use this software, you will need the following:
A Windows 8.1 ISO file. You can download it from https://www.microsoft.com/en-us/software-download/windows8ISO. Make sure to choose the correct edition and language for your computer.
A USB flash drive with at least 4 GB of free space. Note that all the data on the USB drive will be erased during the process, so make sure to back up any important files before proceeding.
A computer running Windows XP or later.
Once you have the required items, follow these steps to create a Windows 8.1 ISO USB bootable drive:
Install and run Rufus on your computer.
Select your USB flash drive from the "Device" drop-down list.
Under "Boot selection", click on "SELECT" and browse and select the Windows 8.1 ISO file that you downloaded earlier.
Under "Image option", choose "Standard Windows installation".
Under "Partition scheme", choose "MBR".
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