expert_vision

YES it is possible to create a CDFS partition on a USB mass storage device as long as it's firmware supports that (multi LUN). The only way to do that is with with the controller chip software. So: 1) Look here for your flash drive and see what controller it has. Be aware that this database is not so precisely, so look for multiple results and if they are the same you found your controller. 2) Now that you found your controller download the application necessary to modify the firmware here 3) Use it with caution For example, my stick was Kingmax SuperStick KM-SS8G with the controller USBest UT165. I downloaded UT165 1.65.xx.0 and i was able to write and boot any bootable ISO image of any size including XP, Vista, Win 7 ...