JDiskReport

Version: 1.3.2 || Release Date: 2009-09-29 || License: Freeware App Owner: pakitt

This utility scans a drive, or user file tree, to report the space occupierd by each single directory. The report can be graphical or text based. It is very helpful to determine what is consuming HDD space and, if possible, take action to clean up the hard drive.

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2 Opinions

It's not true.
By default, it excludes the directory /Volumes, so go into the Preferences and the Filters tab to remove it.
Afterward, you can select any drive into the directory /Volumes

The problem with this app is that it does not do anything other than your main drive.