I have created a full backup on Feb 21 with the "My Computer" option for a clone of my disk. I completed an Incremental on May 13th and another on Aug 8th. The problem is, my drive I am backing up only has 23.6 GB of data and the backups sizes are 18.8 GB, 15.6 GB, and 12.9 GB. If I continue doing these backups it will fill my external hard drive. If incremental backups are supposed to only store changes, why are these files so big? I did not make any huge changes to warrant such sizes. The file names end in _215D, _215D2, _215D3. On my first incremental, I chose _215D as the "existing backup file to back up only changes that took place since the backup creation" On the second incremental, I chose _215D2. Why does it keep making such big backups?