You can't do this - at least not easily. If you create a mksysb to a file instead of a tape mksysb will not include all the boot code which is necessary to boot the machine from the respective medium. This is why mksysb files are not bootable but tapes created the same way are. The mksysb resources on NIM servers are also not bootable per se, but rely on the boot code on the NIM server for the process of booting the NIM client.

To my knowledge there is no tool for creating bootable DVDs from ordinary mksysb files..

bakunin