In addition to the possibility of saving audio tracks as audio files Nero also offers the possibility of saving data tracks at this point.
The result is a Nero image file which can be burnt onto another CD later or used with Nero ImageDrive as a fast CD. Essentially the effect of this command could also be obtained by adding files from the appropriate data track to the hard disk and then burning an ISO compilation with the files included in it. However the saving of a data track followed by burning offers further possibilities:
Advantage: If you burn this image you can append additional data or further sessions to this CD.
On the internal functioning of this command: Nero tries first of all to find the format of the data tracks. Then all blocks of data tracks are saved to the image file. Finally, if necessary, further adaptation work is undertaken to allow the data tracks to be burnt onto non-empty CDs. For the experts among you: the ISO file system has to be "relocated" if necessary. Do not despair: Nero will handle the whole thing for you without you having to give it a thought.
Note: Nero controls the saving of ISO and HFS data tracks. The vast majority of existing CD ROMs for PCs and Apple Macintosh are saved in this format. However if the data on the CD is neither in ISO (PC) nor HFS (Macintosh) format the results when burning onto a non-empty CD can be non-functional. You can find the format of the data track from the display of the track list after selecting the Save Track command. If the appropriate track is displayed neither as ISO, HFS, hybrid nor Joliet but only as "data mode 1", without any more details, proceed with care! Nero allows you the opportunity to save and burn data tracks in unknown formats onto it (for example native Unix file systems). Here all blocks of the track are then simply copied 1:1. The responsibility for deciding whether you can burn such a track "without relocating it" onto a non-empty CD is left entirely up to you.