How to make usb bootable

Make usb bootable:-
 
Bootable disk is also know as start-up disk, it may be floppy disk,CD and may be your USB drive.They contain startup file for your computer to startup when you have no operating system.
In case you haven't operating system installed in your computer, when you turn ON your computer, it show error message 'No operaing system found please inert disk' this means your computer is not able to find any start up file for operation.
When you have installed window, it contains all file your computer needs to operate.
If you want to make your disk bootable then follow the instruction.
 
Windows Floppy bootable:-
                         If you want to make your floppy disk bootable you need in format it first by right clicking on floppy drive, then select format.
After fprmatting right click on floppy drive and select "create DOS start up".

Windows CD bootable:-
                                  If you want to make your cd bootable, you should have a cd writer for writing data on your CD.
There are software that can burn your CD and make it bootable, like there is a software named CD burner, you can Google it and after downloading this software follow me instruction.

Boot from USB:-
                       Now that is the main topic because, now a days people don't use floppy or CD to make bootable disk.
Some laptops don't have disk drive or floppy drive support for that  they use USB and make it bootable in order to install a operating system.
So question is how to make USB bootable, answer lies in a software which i had uploaded on my mediafire account and for you i have a link to download.
Here is a link 
  http://www.mediafire.com/download.php?25q0vtnufjdvx18  

•  Run this software named windows 7 SBB tool.
•  There is option 'Select files'.
•  After selecting files of you windows, click OK
•  You have to select while folder not files in side the folder.
•  If thees are not in a single folder put then in new folder and select that folder.
• Follow the instruction and select your derive which you want to make bootable.
• Click next and it will start formating and then copying files to your drive which you selected.
• Now restart your PC and from BIOS make boot sequence as first USB drive and save it.
• After restarting window will start installing your window.

Thats all you have done it.
  
Note:-
                  This software requires framework 4 to operate, otherwise it won't...

Hope you understand, if you have any query on problem in installing this software please free to comment, i will reply you as soon as possible. Enjoy!!!!