How to make your usb bootable for installing windows 7, 8 and for next version of windows

Hello Guys, I 'm gonna tell you about how to make your usb bootable without using any software. You 've to follow the following steps given below.

1) Insert usb into your computer. Format it with using NTFS file system.
2) Open run command by using window + R key.
3) Type cmd into the run command.

4) Type diskpart into the command prompt. A dialog will be prompted for permission. click on yes. A diskpart window will be open.

5) Check your usb drive letter in my computer.
6) Type 'sel vol i' and press enter in the diskpart window. where i is the letter of you usb drive. your usb will be selected.
7) Now Type active and press enter. A message will show as your Diskpart marked the current partition as active.

8) Now open your dvd or iso file. Copy all files and paste into the usb drive.
9) Your usb is ready for installing windows.