These are the instructions to create Bootable Android USB Drive using the Universal USB installer on Windows Computer.
Requirements: You need to have a pen drive with at least 8gb of space and which supports bootable option on Windows Computer.
[*] How to Choose iSO? If in case your Windows Computer is running on 32 Bit then download x86 bit iSO file and if your computer is a x64 bit then download x64 bit iSO file.
[*] Bootable Android USB drive can not be used to install the Android package as your Computer. If in case you want to use the Android OS, then you must connect the pen drive to the computer.
[*] How to Boot? If in case you are using any Windows computer, then you must set the boot priority to Pen Drive through your BIOS.
[*] Credits: Universal USB installer is created and distributed by pendrivelinux.com. So full credits goes to them for sharing the application for free.