Window 8 has a lot of new features.It is better optimize for file transfer and security. Testing Version of Window 8 has been published.You can download developer-preview version of it from Here.
Here I am demonstrating how to make Window 8,window 7,window Vista USB bootable.So that it will boot from Pendrive/Flash drive one can use it to install it to their pc.There is no need to make a DVD for it.
1. Download grub4dos from here. I am using grub4dos for make USB bootable from Pendrive.It is too a Zip file,extract it too using any program like Winzip or Winrar.
2. Format your USB drive to FAT32.It is always better to format Pendrive to FAT32.
3. Copy two files from grub4dos zip file grldr and menu.lst as shown below picture.
4. Run executable file grubinst_gui.exe from grub4dos.you will get the following screen ,
follow following steps –>
a. Refresh the button marked as a in red and Select your Pendrive from here.If your pendvide is of 4 Gb the you will see approx.to 3645M .
b. Refresh the button marked as b in red and Select “Whole MBR”.
c. Click on install marked as c in red.

5. Now Extract iso(Image file) of Window 8,window 7 or Window Vista anywhere in your PC. Copy the extracted files to USB drive.Your USB drive is now bootable.









