1. Select a partition from the list at the top right of the Partitions window.
NOTE: You cannot unmount the startup partition on the startup drive unless you start up from a floppy.
2. Click the Unmount button.
3. The DriveManager will unmount the partition, unless a file on that partition is currently open; in that case, a dialog will be displayed informing you of this. If this dialog does appear, you must Quit from all applications and repeat steps 1 - 3 in order to unmount this partition.
4. Click the Done button.
NOTE: If you are in the Finder, you can unmount a partition by dragging its icon to the Trash.