[luv-talk] Burning bootable ISO's to Flash cards and USB sticks..why so difficult ?

Assembled cogniscenti; due to a problem with the USB DVD/ RW burner that I used to use for booting my eeePC 900; with various exotic OS's; I have of late been trying to 'burn' ISO files to flash-cards and USB sticks ie. SD memory. If I boot with EASEUS on a USB stick I can create an ISO image of a bootable drive; but when I come to 'burn' that image to a USB stick ; even when they do burn they mostly won't boot ........... obviously there is some complication which I am not understanding; thanks Rohan McLeod