In order to be able to create backups of your files in a CD-R, you will need to install Easy Burning. 

What are the benefits of using Easy Burning?

The program saves backups of your files in a.CDRW archive, which is a standard for storing data on a CD-R. You can easily send your backups to a remote server, which makes it possible to restore your files in case of data loss. The program supports multisession and multifolder, so you can use it in the same way as a normal application. In addition, it is possible to use the program as a normal application. 

In order to create backups, you need to select an appropriate folder or folder and add the files and folders you want to be saved. After that, you need to press the "Start" button.