There is a right and a wrong way to eject a mounted
drive. If you do not follow the directions below to properly eject a
mounted drive, you could lose documents that are stored on the drive.
To properly eject a mounted drive, do one of the following:
Click on the drive you want to eject, and then drag it to the trashcan located
in your dock.
You may also select "Eject" from the file menu.
Finally, you can press the "Eject" button next
to the mounted drive in the sidebar.
Once you have successfully ejected the drive you
may unplug it from your computer without losing any documents on that
drive.