Are the files on removable media, such as external hard drives and USB sticks also backed up?
No, the files on removable media (external hard drives, USB sticks, CDs, floppies, DVDs, etc.) are not backed up. Only the files on the hard disk of your computer are included in the backup. This feature prevents your data from ending up in another user’s backup, for example, if you use your USB stick in your friend’s computer.