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Install Windows 8 from a USB drive, what you need:
1.USB flash drive (4GB or larger)
2.Windows 8 ISO image file (Download here (http://www.windows8newsinfo.com/smf/index.php?topic=21836.msg28456#msg28456)),
3.Microsoft’s Windows7 USB DVD tool (Download here (http://images2.store.microsoft.com/prod/clustera/framework/w7udt/1.0/uk/Windows7-USB-DVD-tool.exe))
Step1. Install Microsoft’s Windows7 USB DVD tool and run it. In the dialog box as below, Click “Browse” button and choose the Windows 8 ISO image file you’ve already downloaded then hit “Next”.
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Step2. When you see the dialog box as below, choose “USB device” button to continue.
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Step3. Select the USB flash drives you want to use from the drop-down menu, and click “Begin copying” button.
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Step4. Sit down and wait for Windows7 USB DVD tool formats the USB drive, and copy the Windows 8 file to the USB drive.
When it finish, you can boot your PC from the USB Drive and start install Windows 8.
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