NeroLINUX supports booktype setting on DVD media, if the recorder supports it. However, some of you might have noticed, that the booktype keeps unchanged with new kernels.
This is due to some vendor-specific SCSI commands that are used to change the booktype of a disc. These commands are not public, and so not considered as ‘safe’ by the kernel. That’s why, unless you are running NeroLINUX as root, you will not be able to change booktype with a kernel >= 2.6.8.
If you have some remarks/questions about this issue, you can use this thread