MyBook problem after upgrading to windows 10

After upgrading to windows 10, I find that the partition containing the software seems to have disappeared. The usual WD icon on the desktop has been replaced with a generic one, and after right-clicking on it there is no option to open or run as administrator. The My Book screens to set up and run auto back-ups are no longer available. In the disk management screen, only the large NTSF partition for back-up data shows; the smaller UDF partition is nowhere to be found. What happened? How do I restore things to their original condition?


Can you please share the model number of your drive?

The model number is WDBFJK0020HBK-04