Acronis will have backed up the partitions you specified. If you only specified C: then any other partitions will not have been backed up. I presume you mean the small system "Reserved Partition" of about 100mb? That is the boot and Repair bit. "if you already have it, then YES you need it. You cannot delete it because it contains boot files necessary to load Windows" click here
You could explore the Acronis Image to see what you've got.