Virtual CD FS collections support these types of CDs and DVDs:

• Data CDs
• Mixed Mode CDs (only the data track will be added)
• Data DVDs

Only virtual CDs/DVDs that are neither encrypted nor password-protected can be added to a collection.

The file systems ISO, Joliet and UDF (partially) are supported. Partially means simple UDF file systems with one physical partition within the images.

If an image has more than one file system, first UDF, than Joliet and last ISO will be used.

Please also have a look at the knowledge base article Multisession CDs in collections for further advice.