This feature is only available in Enterprise Edition.
If enabled, the Allow searching of file systems not fully supported by Microsoft Windows setting will allow Identity Finder to search any unsupported remote file system. Depending on the method used to connect to a system running an operating system other than Microsoft Windows (such as a Mac, Unix or Linux), unsupported file name lengths and/or file name characters may be reported to Windows. In these instances, invalid file names or paths cause instability in Windows and therefore in Identity Finder. By disabling this feature, Identity Finder will only search drives that are fully supported by Windows.
If you choose to enable this feature, you can have Identity Finder warn you when it finds a remote drive that is unsupported. To do this, enabled the Display a warning when unsupported file systems are detected checkbox.
To view or change these settings, click the Settings button on the Tools and Options ribbon.