How to backup multiple partitions in one image and restore
Several free products are available that backup multiple partitions or entire disks.
Some are listed below.
AOMEI Backupper
Maybe the best of its kind. Does Restore with Shrink.
Paragon Backup and Recovery Free
Lots of options. Also does Restore with Shrink.
Macrium Reflect Free
EASEUS Todo Backup
This article shows how to backup multiple partitions/disks/MBR:
Free Windows Backup Software Help You Backup Drive and Partition
Clonezilla
Very reliable and stable, but more complicated to use.