Generally, we use a CD/DVD which contains the .iso file of the operating system. this helps install the respective operating system on your PC. Let us suppose you don't have a DVD/CD in hand. In this modern era it is a common to see a pen drive at every home. You can make your pen drive contain a installable OS and then use the same to install new OS on your PC. The folllowing the simple steps:
1. Download your .iso image of the operating system.
Note: iso is the generic format used for operating system installer.
2. Insert your pen drive to the system USB slot. Format the Pen drive.
3. Download the USB installer from the below link:
www.pendrivelinux.com/universal-usb-installer-easy-as-1-2-3/
Note: This is a executable file and you can open directly. No need of installation
3. Run the Universal USB installer you just downloaded.
4. Follow and browse the steps as mentioned in the universal installer to make a pen drive bootable.
Note: When you want to install from open drive, you have to set the bootable option to USB in the boot prompt.
