So I actually have a 16GB usb formatted as UDF. It seems to work perfectly in Linux, Windows vista+, and read only support in XP. I need to explicitly unmount i

So I actually have a 16GB usb formatted as UDF. It seems to work perfectly in Linux, Windows vista+, and read only support in XP. I need to explicitly unmount it in Windows though, otherwise it becomes read-only the next time I plug it in to a Windows machine (mounting it on linux fixes this). Now I've never gotten it to work on OSX though, which is by trying my friends machines. I've always used the linux udf utility to format it, and have tried both with and without a partition table. It seems OSX, unlike Windows and Linux, actually respects the partition id.