Ubuntu 14.04 installation with USB flash drive problem

if you are using ubuntu now, try the application "startup disk creator"

if you are currently on windows, i have found an application called "rufus" works very well

if you still cant get the USB to boot, it may be a problem with your bios configuration being incompatible how the USB was formatted... Such an issue woud be beyond my expertise...

another method is to use dd.

cat /proc/partitions Plug in the flash drive
cat /proc/partitions and write down the name of the drive that it is sdx (not sda!)
cd /path to 14.04.iso
sudo dd if=14.04.iso of=/dev/sdx (note the lack of a number for the partition.)

This WILL erase all data on the flashdrive.