Making Bootable USB in linux

A graphical tool is available to create Fedora USB media on systems that run Fedora, Red Hat Enterprise Linux, or operating systems derived from
either of these. To create Fedora USB media on other UNIX or Linux operating systems (including Mac OS X), use the command-line method which is explained below

1.  Plug in your USB flash drive.
    
2. Find the device name for your USB flash drive. If the flash drive has  a lume   name, look up the name in /dev/disk/by-label,or use                                             findfs:su -c 'findfs LABEL="MyLabel"                                                       If the media does not have a volume name, or you do not know it, run dmesg after you connect the USB flash drive. The device name, similar to /dev/sdc, appears in several lines towards the end of the output.
3. Use the dd command to transfer the ISO image to the USB device:                                 dd if=path/image_name.iso of=device
4. where path/image_name.iso is the ISO image file of the installation DVD that you downloaded from the Red Hat Customer Portal and device is the USB flash drive. 

         For example:
                        dd if=~/Download/F14-Server-i386-DVD.iso of=/dev/sdc

Soon i will post different methods in linux and also in Mac OS