How To Change OS Without CD/DVD

"Recommended Version"
 Thing To Use :
 - FlahDisk / USB Drives
 - Downloaded OS

1. Open CMD (Command Prompt)
2. Type " diskpart "
3. Then Type " listdisk "
4. Select Your USB Drives, Tips : See Your USB Drives Size, Then You Choose Your Actual Size of USB Drives, Which Number Is It?
5. Type " select disk # " (Change "#" To Your USB Drives Number)
6. After That Type " clean "
7. And Type " create partition primary "
8. Type " select partitition 1 "
9. Type " active "
10. And Type " format fs=fat32 "

This Gonna Take A Minute.

And After 100 Percents

11. Type " assign "
12. And Your USB Has Been Changed / Has Been Succesed To Become A Bootable USB.
13. Type " exit " (Close in  8 Seconds)
14. Copy Your OS To Your New Bootable USB.
 
Anything Wrong?! " This Is Tested!
Or Leave Me A Comment, If There Anything Wrong.

See Ya'all