Hi, another pointer maybe: When I ran into the "iso can't have files larger than 2GB" (at least on Linux) I created a DVD sized dummy file and formatted it as udf file system. Then mounted it loop-back, wrote my stuff there and burned the image. That worked .. if the whole system managed to stay stable while writing to udf (early 2.6 kernels). Maybe the udf flag for mkisofs would also help? Does anybody here know ? Or is that just for video? K.-H.