So, you have download the disk image (ISO) file of the Windows 8 Developer Preview available for free public download. Since, the file is an ISO format, you cann't directly run and install Windows, instead, you have to burn the image to a DVD or copy it to a bootable USB flash drive.
Although there are plethora of utilities available to help you accomplish this task, however, the easiest of all is the Microsoft's Windows 7 USB/DVD Download Tool, which just works fine with Windows 8.
To install Windows 7 USB/DVD Download Tool you need either of the following operating systems; Windows XP SP2, Windows Vista, or Windows 7 (32-bit or 64-bit). The steps to insall the tool are as follows:
- Click to open the Windows 7 USB/DVD Download tool installation file.
- When you are prompted to either save the file to disk or run it, choose Run.
- Follow the steps in the setup dialogs. You'll have the option to specify where to install the Windows 7 USB/DVD Download Tool.
Note: 1. You need to be an administrator on the computer you are installing the Windows 7 USB/DVD Download tool on. The tool requires the Microsoft .NET Framework version 2.0 or higher.
2. Windows XP Users; the following applications must be installed prior to installing the tool:
- Microsoft .NET Framework 2.0 must be installed. It can be downloaded here.
- Microsoft Image Mastering API v2 must be installed. It can be downloaded here.
Note: For the x86 and x64 Windows 8 ISO files without developer tools, you'll need a blank DVD or a completely empty bootable USB flash drive of 4GB or larger. At 4.8 GB, the x64 version with developer tools is too large to fit on a regular DVD, you'll need a dual-layer DVD (and compatible drive) or an empty 8GB (or larger) flash drive.
To make a copy of Windows 8 ISO:
- Click the Windows START button, and click WINDOWS 7 USB/DVD DOWNLOAD TOOL in the All Programs list to open the Windows 7 USB/DVD Download Tool.
- In the Source File box, type the name and path of your Windows 7 ISO file, or click Browse and select the file from the Open dialog box. Click Next.
- Select USB device to create a copy on a USB flash drive or select DVD disk to create a copy on a DVD disk.
The following screen what you'll see if you choose the USB device option. Select the correct drive and click Begin Copying.
- If you are copying the file to a USB flash drive, select your USB device in the drop-down list and click Begin Copying. If you are copying the file up to a DVD, click Begin Burning.
When your Windows 7 ISO file is copied onto your chosen media, install Windows 7 by moving to the root folder of your DVD or USB flash drive, and then double-click Setup.exe.
When you're finished, you have a DVD or a flash drive that you can set as the startup device on your computer so that you can begin a clean setup. Or you can open the setup disk in Windows Explorer and double-click Setup to upgrade your current Windows installation.