Boot It

Boot It is a Linux loader designed for use with disc images placed on an SD card or USB Device. It bypasses the need for partitioning by allowing the user to run a disc image in almost exactly the same way as one would run a Linux live CD, with the notable exception that the user can actually make changes to the "disc" during their Linux session. It can also boot normal Linux partitions. Follow the More Info link at the bottom of this post for installation and usage information.