I just plugged in an external harddrive to a device running Ubuntu 12.04 LTS and when I attempt to umount the drive e.g.
umount /dev/sdc1 or
umount /media/harddrive the drive is still accessible via the menu that appears on the left. The only time it disappears from the menu or is no longer accessible when I right-click on the harddrive and select the option
Why does not umount not work?
safely remove umount and then poweroff?
How do I use the same command (safely remove) in the terminal?