Hey,
I've been trying without luck (so far) to install Windows 8 on my UEFI system. The USB has to be formatted with the file system set to FAT32 in order for the UEFI bios to recognize it as valid or it defaults to legacy and I can't install Windows using the GPT partition format.

So NTSF is not compatible with UEFI, and FAT32 as you must know has a file size limit of 2GB. The problem being that in the sources folder of the Windows 8 DVD is a file called "install.wim" that weighs 4.3GB, so it fails to be copied when I try to use the utility (Universal-USB-Installer) and the Microsoft utility (Windows7-USB-DVD-tool) converts the partition to NTFS making this a total bust for me. Any suggestions?