Disk Expert displays list of volumes presented in system. For every volume displays its free size and total size.
At the right side of the application window there is a panel with detail volume information.
Disk Expert displays volumes of types: Hard Drive volumes, Flash Drive Volumes, CD & DVD disks, external storage disks. All volumes being displayed are grouped by type.
If a volume is mounted or unmounted in your Mac, Disk Expert handles the system notification and refreshes list of volumes. Nevertheless it is not recommended to eject or unmount disk during scanning process.