This tutorial will help you to install any version of Windows from image (.iso and .img) file using USB Drive. It is a clean and simple step by step method with pictures and screenshots. NO need of CD/DVD Rom to install windows. All you need is a USB flash drive of at least 8GB for Win 7, 8, 8.1 or 10.
This article is related to all following topics.
⇒ How to Create Windows Bootable USB Drive
⇒ How to Install Windows from an ISO File
⇒ Windows USB Installation Guide
⇒ Install Windows on USB
What is and ISO File
When you download Windows from Microsoft Store or any online official/unofficial source, you download it as an .ISO file. This ISO file has all the Windows installation files into a single uncompressed file – like a DVD clone or backup. With ISO file so you can create (burn) a bootable DVD or USB drive containing all Windows installation files.
This allows you to install new Windows OS onto your PC. You have to change boot order of drives in your PC’s BIOS, you can run the Windows installation directly from your DVD or USB drive when you first turn on your computer.
How to a Bootable USB via Rufus
You need Windows image file + ISO to USB burner software (e.g. Rufus) + USB flash drive to create Windows USB Install Disk.
Download any version of Windows from any online source
Download any ISO to USB burner software to make your USB Bootable. I recommend you to use Rufus (No installation Needed, Fastest and Easiest). It is the easiest with one click method.
2- Click on USB Device as media type you would like to use to create windows 7 bootable USB drive.
3- Click on Start button. Now Rufus will copy the ISO file and make it bootable. After finished, open this external device (USB) to check whether the files are copied or not. If copied then close it and eject.
Restart your computer and select your USB device as the primary boot option in the BIOS boot menu.