I tried hard the last days to add some newer drivers to the existing NW6.5SP8 overlay DVD. Adding the drivers to the DVD is not the problem, but after burnning the DVD it will not boot.
I created the remasterd overlay DVD with different software (MagicISO, UltraISO and CDBurnerXP) using the bootsector of the official NW6.5SP8 DVD.

The problem is always seen as a red error message starting installation with the new DVD or a server without any messages (black screen) after start booting from the DVD.

Any idea how the overlay DVD have to be created for proper work?