With Windows 10 looming on the horizon, I was looking into creating a back up of my computer in case something goes awry. I have a 2 TB external HDD coming in the mail today, but my computer currently is running with three separate drives (a 64 GB SSD with my OS and some random applications; a 500 GB HDD for my documents, music, videos, and images; and a 1 TB drive for my games) and I'm not sure how I would go about backing up this data. I have a feeling that I would create three partitions on the external back-up drive, but I'm not sure how I'd go about backing up everything or what the process would entail, as my only previous experience with backing up files is just copying some important documents to a second drive.