How to delete greyed out Bookmarks and Recents? I had an external HD go out on me, so I switched to a new HD. However Blender is still looking for the old HD in bookmarks. I can't select it to delete it. Any ideas?

I realize the image below is recents and not bookmarks, just replicating the problem on another computer.
You can delete greyed out Bookmarks but not Recent. Recent will just go away after a while or you could delete all of them by clicking X button next to the list.

To clear bookmarks list click on arrow button next to the list and choose Cleanup.