Finder and Devices section Till some days ago, the external USB drive FA_SAMSUNG used to appear in the Devicessection of a Finder window. See attached screenshot.



All of a sudden, both drives disappeared from that section: the internal SSD and the USB external. I was able to add the SSD back to that section by dragging its icon. But I find no way to have the external USB drive back in the Devices section: if I drag its icon into that list, the icon goes back where it was.

I am using OS X 10.11.6.

Is there anyone who can help me?
The first thing you need to check is your Finder preferences.


In the Finder, go to Finder > Preferences
Select the Sidebar tab
Now check to make sure that both the Hard Disks and External Disks option are selected
Close the Finder Preferences window