Utilize the System Image Backup utility to backup the your drives.

Before you start, check to see what amount of space you will require to backup to.
The image will only be the "used" space not the total drive. Use file explorer to determine which drives to backup and the amount of space you expect to use. External USB3 multi-Terabyte drives come in real handy for this purpose.

Name                              Type                             Total Size            Free Space
(C:) Local Disk          Local Disk                          1.81TB                  1.56TB

                                                               0.25  Terabytes required to backup
                                                                                      (or 250 Gigabytes)
Quick FYI
1.4 Megabytes = 3.5inch Floppy                   1,400,000 bytes
1000 Megabytes = 1 Gigabyte              1,000,000,000 bytes
1000 Gigabytes = 1 Terabyte        1,000,000,000,000 bytes

CDroms? at max capacity 800Megabytes...  250G divided by 800M = 313 CD's would be needed
DVD? at max capacity, dual layer = 8.5Gigabyte... 250G divided by 8.5G = 30 DL DVD's
BluRay? at max capacity, dual layer = 50Gigabte... 250G divided by 50G = 5 DL BluRays

Seagate Passport drives can come in very handy for this :)

Search for "
File History"  (Win+C)
     not "File History settings"

Bottom left corner you will see "System Image Backup"

Note: A system image is a copy of the drives required for Windows to run. It can also include additional drives. A system image can be used to restore your computer if your hard drive or computer ever stops working; however, you can't choose individual items to restore.

Fist select where you want to back up to.
Next screen will allow you to select what to backup and provide you the information regarding how much space will be required.