
If you want to save storage space on this secondary Mac, make sure Optimize Mac Storage is selected: This will save a certain percentage of images and video locally to your device, while providing thumbnails of all the others for you to download at your leisure. If you don't have an iPhoto library on your secondary Mac, create a new library in Photos and turn on iCloud Photo Library. If you have duplicates of the same photo on each computer, iCloud should automatically resolve those conflicts when it syncs, providing you with just one version of your photos when the sync process finishes. If you have an iPhoto library on that secondary Mac, follow the same steps as above - import your library, then turn on iCloud Photo Library. Now, open your other Mac, and launch Photos.

Then, while you click to open Photos, hold down the Command and Option keys at the same time.

Select Preferences (or do this quicker by pressing ⌘,). Ubuntu is the modern, open source operating system on Linux for the enterprise. To get to the Photos Repair Library tool on your Mac, follow these steps: If Photos is open, close the app. You can do this by following these steps: Once you've imported your biggest library on your Mac, make sure iCloud Photo Library is turned on and syncing.
