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#1050
Clone - creates a bootable duplicate
Image - is a snapshot of the system at that time which can be restored
I recommend to work with images.
Think of images as a photo negative you use to later make a usable print. Unlike cloning, you can make images of individual partitions. Images are the best way to backup a drive or partition with an OS.
A clone is more like a Polaroid instant photo print. It's a duplicate of the source drive. One can only clone entire drives. Cloning is the fastest way to make a usable copy of a drive since it's one step and doesn't need a separate drive to store the image on.