Hard links are files all with the same weight and dimensions as the original file except that they aren’t the original file but a reference path to the original file the the computer uses go directly to the original. You can think of this as a placeholder, in that the hard link looks like the original file in the location you want it without taking up the extra space of having two duplicate files.
Gemini 2 allows users to create hard links in the place of duplicate files. This gives you a possibility to to save space on your Mac’s hard drive yet be able to find the specified duplicates as Gemini 2 creates multiple paths to one file in various locations however the file is stored in only one location.
While Gemini 2 will create hard links for any types of files including pictures, audio tracks, and documents, there are certain limitations to the feature:
- Hard links cannot be created in iTunes or Photos libraries.
- Hard links may point only to files on the same volume and it’s not possible to link to files on different volumes.
- A hard link will always point to the most recent version of the file, therefore of you need to store different versions of the file (in a backup for example) creating hard links may not be a great idea.
Gemini is smart. It easily tells copies from originals. It knows which files to keep intact. But the best thing is that it learns to select duplicates the way you do. Gemini's algorithm remembers what you delete and what you choose to keep. It's like an apprentice you are training.