System backup vs. disk backup
I have read different posts about this subject but I have still not found a resolution to my specific situation concerning the question of, should I do a system backup or a disk backup, because everyone starts muddying up the waters with talk of partitions and disks and drives.
My question is, if everything is on just one drive with no partitions, and that drive is the only thing on your disk, is there still a difference between a system backup and a disk backup? In my case, I have an internal 2T HDD that is labeled "Disk 0" and the only thing on that disk is a drive that has been labeled "C:" which contains everything in one primary partition. I am backing up to an external 2T HDD that is "Disk 1" containing drive "E:" and I have done both types of backup using AOMEI Backupper (Free Version) and when I check the properties of both of these files, they are the same size. Am I wrong in assuming that, in my situtation where everything on the HDD is included in one drive, there is no difference between the two types of backup, or is there some other difference between the two types of backup that matters when it comes time to restore the system or retrieve files? I've seen talk of being able to boot from the drive which has also added confusion to the issue.
Thanks in advance for your time & attention.