Identify the file-system implementation
macFUSE is an integration layer; the file system that creates the mount is a separate component. Identify which app or command is responsible for the volume and check that it is installed and configured for the source you are mounting.
The macFUSE project page can help you locate project information. Confirm exact compatibility and installation steps with the current documentation for both components.
Check versions and compatibility
After a macOS update, verify that the macFUSE release and the specific file-system implementation support that OS version and your Mac architecture. Compatibility can differ across releases and backends, so do not rely on an old setup guide without checking its date.
Read the mount error before changing settings
Record the exact message and the time it occurred. Check whether the source is available, whether the mount point exists, and whether the implementing app reports a configuration or permission issue. Avoid disabling system protections simply because a volume failed to appear.
Change one layer at a time
Restart the responsible app or service only when its documentation recommends it. If an update is needed, install from the project’s trusted release channel and follow its current instructions. Changing the file-system app, macFUSE, and security settings all at once makes the cause harder to identify.
Protect the data before retrying
Back up important files before writing to an unfamiliar or unstable mount. If a volume contains irreplaceable data, stop repeated mount attempts and consult the implementation’s support guidance. Troubleshooting should preserve the data first.