UEFI is nothing new, but it is first time introduced in Windows 8. If you want to install a clean copy of Windows 8 or Windows 10 on a UEFI-enabled computer, you will need a UEFI bootable USB flash drive to start with. This is a tutorial to show you how to make such flash drive with and without the help of 3rd party tool.
Bootable UEFI USB of Windows 10 using Rufus:
Step 1: Visit this page and download the latest version of Rufus. Rufus is a portable utility and hence doesn’t require an installation.
Step 2: Connect your 4GB+ USB drive to your PC where you have installed Vista, Windows 7, Windows 8, or Windows 8.1. Be sure to backup all data from your USB drive.
Step 3: Run Rufus utility. Click Yes button when you see the UAC prompt to launch the tool.
Step 4: Under the Device section, select your USB drive that you want to make bootable, select MBR partition scheme for BIOS or UEFI computers, or GPT partition scheme for UEFI computer depending the type of partition type on your PC.
Step 5: Next, select the File system as FAT32 (default) as it supports both BIOS and UEFI. But if you’re sure that your PC doesn’t support UEFI, you can choose NTFS for a faster installation.
Step 6: Enter a volume label, click on the CD/DVD drive icon to browse to the Windows 10 ISO image file. Select the file. To download the latest ISO, please go through download Windows 10 ISO from Microsoft guide.
Step 7: Finally, click Start button, click OK button when you see the warning dialog to continue its job.
Once Rufus completes its job, you’ll see “Done” message. That’s it!
Windows 10 Bootable USB using USB/DVD Download Tool:
Step 1: Click on this official link to download Windows USB/DVD Download Tool directly from Microsoft servers.
Step 2: Connect a USB flash or hard drive with 4GB+ capacity and backup data before continuing further. Please be sure to backup all data from your USB drive as the drive will be formatted in the coming steps.
Step 3: Run the downloaded USB/DVD Download Tool setup file and then follow the easy on-screen instructions to get it installed on your PC running Vista, Windows 7, Windows 8 or Windows 8.1.
Step 4: Launch Windows 7 USB/DVD Download Tool, click the Browse button to browse to the folder where Windows 10 ISO image file is located. After selecting the ISO image, click Next button.
Step 5: In the following screen, you need to select USB device as your media type. To do so, click on the USB device button. And if you want to prepare the bootable DVD, please click DVD instead.
Step 6: Next, you’ll be asked to select your USB drive. Please carefully select your USB drive from the drop-down list before clicking the Begin Copying button. Again, it’s important to note that a wrong selection of drive will cause data loss.
The Windows 7 USB/DVD Download Tool starts copying all the contents of the ISO image to the USB drive and will make it bootable in a couple of minutes.
Once done, you can connect bootable USB to the PC on which you want to install Windows 10, change BIOS settings to boot from USB, and start installing Windows 10.