Unable to create system image

Just purchased a WD My Book 4TB external drive. I’ve done a file backup but contrary to what WD support told me, I can’t create a system image backup on the WD drive using the Windows 10 “create a system image” option. What’s the problem?

Seems I heard that the latest releases of Windows 10 has issues making images…not positive. However, have you tried Macrium Reflect? It works very well for me.

Thanks for the info. I’m not familiar with your recommendation but will check it out. Thanks.