How to install Windows 8 from USB Flash Disk
– 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”.
– When you see the dialog box as below, choose “USB device” button to continue.
– Select the USB flash drives you want to use from the drop-down menu, and click “Begin copying” button.
– 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.
To install Windows 8 from a USB drive is easy as from DVD. Read the post about How to install Windows 8 Without DVD to finish install Windows 8.
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