To determine if a Google Drive folder is private or not, look for the following indicators:
- Check if the folder's name starts with an underscore (e.g., _private_folder) and only contains underscores, rather than spaces or special characters.
- Navigate to the drive URL in a web browser by typing this link and look for any folders that match your desired folder name.
- Verify the folder's owner by checking the "Creator" field on the folder's details page. If it matches your desired owner, then the folder is private.