How to Create a bootable USB drive??

Rufus

Create bootable USB drives the easy way

Rufus is a utility that helps format and create bootable USB flash drives, such as USB keys/pendrives, memory sticks, etc.
It can be especially useful for cases where:

you need to create USB installation media from bootable ISOs (Windows, Linux, UEFI, etc.)
you need to work on a system that doesn't have an OS installed
you need to flash a BIOS or other firmware from DOS
you want to run a low-level utility

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Source & Downloads:

http://rufus.akeo.ie/
http://www.pendrivelinux.com

Help!!! My PC no longer recognizes my Android !!

BEFORE you decide to format and loose everything, try these 2 methods :
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Method 1
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Reboot your phone into ODIN mode by holding (Vol Down + Home + Power)
then press (Vol Up)
Connect your phone to PC and let it install drivers
Remove phone's battery and start it normally

Now you should be able to connect your phone normally. :)

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Method2
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In the phone dialer dial:

*#0808#

you will get "USBsettings" or "UltraCfg"
Now choose the first option (MTP) and reboot. :)

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A useful post : http://blog.vacs.fr