It is not possible to free this space with TreeSize or any other tool. If a drive letter points to a sub-folder of a network drive, the allocated space (correctly) reported by TreeSize may also be much smaller than the physically allocated space on this drive reported by the Windows Explorer because possibly the whole drive is not accessible through the network.īeyond the space that is needed for storing the files itself, additional space is used for storing management data like the File Allocation Table of the file system or the boot sector. Turning on the Option "Track advanced file system features" in the Options dialog may result in more accurate results, because it tracks e.g. If you want to get notified if a folder cannot be scanned, please open the options dialog (File > Options) and enable "Show error messages during scan" under the option page "Scan > General". Therefore it is highly recommended to run TreeSize as administrator. Please make sure that you have the view option " Allocated Space" activated when you are interested in the physically allocated space.Īnother possibility is that not all parts of the drive could be scanned due to access restrictions. The Windows Explorer and the TreeSize drive list do show the space that is physically allocated on the drive while TreeSize shows the space that is occupied by all files under a certain path. Enable "Linked Connections" as described here.
Use the "Map network drive" or "Add drive or UNC path" dialog from the Drive List menu bar.Type net use /? for more instructions on how to map the drive. You can list the mapped drives using net use Map the network drive in the context of the administrator using an elevated command prompt (run CMD as administrator)."\\server\share") for the network drive into the path drop-down list or target selection dialog and press enter. Do not run TreeSize as administrator unless it is truly needed.
There are some workarounds to gain access to those network drives anyway: This is because Windows uses different user environments for non-elevated and elevated processes. One side effect of this is that you may not see your mapped network drives anymore (Windows 8 and later), or they all appear disconnected (typically in Windows Vista and 7) in all applications that run with administrator privileges. Since Windows Vista and later, Microsoft enforces more strict security rules on the operating system.
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