I apologize if this has been answered, but I can't find enough information to answer my particular question: What is the difference in uses of these two methods of backup. The Acronis user guide recommends differential, but the knowledge base recommends incremental for the average user. I simply want to backup the full image of my hard drive once a month (I don't use it that much) with smaller backups (incremental or differential-whichever would be best) more frequently throughout the month. I also don't know about the folder creation on my external HDD- how do I structure the folders to do this? Do I need an image folder, then a folder for the backups, or is everything saved to the one image folder by default. Sorry for the "newbieness" but imaging is a new concept for me.