MAC - How do you power down MyCloud NAS?

If the WD Quick View program won’t see the My Cloud, first troubleshooting step is to uninstall the software. Then reboot the computer, then reinstall the WD Quick View program and see if it recognizes the My Cloud and will shut it down.

WD Quick View for Mac: https://support.wdc.com/downloads.aspx?p=183&lang=en

SSH is universal. One can use their favorite search engine to learn more on how to use SSH and issue SSH commands for their operating system. For example…

More on using SSH to issue the shutdown command for second gen v2.x single bay My Cloud units: