How to install Windows 8 from a USB drive

The Release Preview is the final pre-release version of Windows 8 and is free to try. here's a brief guide on how to easily install Windows 8 from a USB pen drive.

 Requirements:

USB pen drive (4GB or greater in size),
Windows 8 Consumer Preview disk image file (64-bit download here, 32-bit download here)
Microsoft's Windows 7 USB tool (download here).
Working PC.

Procedure:

1. Install and run Microsoft's Windows 7 USB tool. In the subsequent window (pictured below), browse to the 32-bit or 64-bit Windows 8 disk image file you've already downloaded and hit next.



2. With your USB stick plugged in (remember, it'll need to be at least 4GB in size for a 64-bit install), choose USB device as your media type.


3. Select the correct removable device from the drop-down menu, then click begin copying.


4. Sit back, relax, and make a cuppa while the USB tool formats your pen drive, makes it bootable, and copies over all of the Windows 8 files.


5. Once the process is complete, the USB drive can be used to boot a PC and run the Windows 8 setup process.


That's all there is to it. You'll save yourself a blank DVD, the Windows 8 setup process should be quicker from flash-based media, and it's of course a must on netbooks or laptops without an optical drive.


Source: http://hexus.net