Manage Drives & Mounted Volumes from the Mac OS X Menu Bar with FreeSpaceTab
FreeSpaceTab is a free utility that lets you manage hard disks and mounted volumes directly from the Mac OS X menu bar.
With an attractive and simple GUI, you can pull the menu down to see all mounted drives and partitions, arranged by volume type (local drives, disk images, network volumes, etc) as well as free space available on each volume. Drives can ejected on a per disk basis, or mass ejected if you want to unmount everything. Also nice, the menubar icon itself can be set to display available disk space on the default boot volume, allowing for an quick way to see available drive capacity.
These menubar apps are especially useful if you hide the Mac OS X desktop to reduce clutter, because they give you information and functionality that you’d otherwise need to access the desktop or a Finder window for.
FreeSpaceTab is a better solution than the recently discussed a hidden eject menu that can be enabled in Mac OS X, containing additional functionality as well as the ability to eject disks. All in all a worthwhile app to download, check it out.