The big advantage of a UDF/ISO Bridge CD is that the data comply with both the UDF standard and the ISO standard. The data are only added to the compilation once and Nero automatically creates a UDF and an ISO table of contents. These two tables of contents allow the CD to be used as a Bridge CD.
Please note that Nero does not support Multisession UDF/ISO Bridge CDs at the present time. UDF Bridge sessions must therefore be written to blank CDs.
Now let's take a step-by-step look at how to create a CD-ROM (ISO/UDF) using Nero:
All settings may be left at their default values.
On the ISO tab you can toggle between Mode 1 and Mode 2/XA format as required. You should not need to verify the format – in the past there were problems with CD drives that could not read Mode 1 CDs, but very few of these drives should still be in use today. If these options are grayed it means that selection is not logically possible at present. Mixing Mode 1 and Mode 2/XA tracks on a CD would result in an unreliable and potentially unreadable CD format. In the 'File/Directorynames length' section you can specify the ISO level for the length of the names. Up to 31 characters are permitted for Windows 95 and higher. Names cannot be more than 11 characters long for Windows 3.1 (8 for the name and 3 for the extension). ISO Level 2 will be best in most cases – if you know that the CD must also be readable on a Windows 3.1 system then you should select Level 1.
If a File Browser is not open yet you can open one by selecting New File Browser from the View menu or clicking the appropriate 'File Browser' icon. To specify that Nero is started with an open File Browser, check 'Start with File Browser' in the 'General' section on the File Browser tab (File -> Preferences).
Clicking the right mouse button opens a context menu where you can selectively add or omit certain file types. In addition there are a number of commands that you will also find in Windows Explorer, such as 'Copy', 'Open' and 'Cut'.
When compiling with Drag&Drop the directory structure is moved across too, i.e. if you drag an entire folder into the compilation window the folder will be created on the CD you wish to burn.
If you drag a lot of individual files however this may affect the clarity of the CD's contents. To avoid this you can create new folders within the compilation. To do this, select the Create Folder option from the Edit menu or click the right mouse button and choose the command from the context menu.
A folder you have just created is assigned the name 'New' by default and can be renamed immediately. You can create as many folders as you need and pull the existing files across using Drag&Drop. You can of course drag other files into the compilation window from the File Browser.
The 'Write CD' dialog box now opens - it is the same as when creating a new compilation but the Burn tab is now in front.
All settings on this and the other tabs can now be reviewed and changed if required.