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#11
I'd use Macrium to back up the C partition (Windows) and a "file by file" backup program to separately backup my data, regardless of whether that data is on C or some other partition.
Macrium works quite well, but you should still have a plan B and know exactly what you will do if it fails.
There are several file by file backup programs available at no charge. Synctoy and Karen's replicator are among the most common recommendations.