Files that contain the .cdi file extension are most commonly associated with the DiscJuggler software application. DiscJuggler is a program that allows users to make copies of computer discs and data.
The CDI files that are created by DiscJuggler contain disc images that have been created by using the software application. The CDI files that are created by the software are often used as backup files to restore hard drive data that has been lost or corrupt.
The CD Anywhere software program also uses the .cdi file suffix. These CDI files contain virtual CD files that are created with the CD Anwyhere application.
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If you have additional information about the CDI file format or software that uses files with the CDI suffix, please do get in touch - we would love hearing from you.