A system image is a bit-by-bit copy of your entire hard drive, including Windows, your apps, and all settings. Use this if you want to restore your PC to its exact current state after a total hardware failure.
File History is designed for regular, automated backups of your personal files (documents, photos, music) rather than the whole system. It creates a timeline of your files, allowing you to restore specific versions from the past. Any simple way to backup Windows 11 to external hard drive?