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You are looking in the wrong Library folder. You want the /Home/Library/ folder that is invisible. Three Ways to Make the Home/Library Folder Visible. This method will make the folder visible permanently. Extract photos from mac photo library. Open the Terminal application in the Utilities folder and paste the following at the command prompt: chflags nohidden /Library. Press RETURN. Your Mac's root-level LaunchAgents folder is a common location for adware to store files. Why is this bad? Double-click on “Library,” then, and you’ll find the folder labeled. 2020-4-3  Some troubleshooting procedures require you to navigate to and view a hidden folder on Mac. You can access the Library folder with the Go To Folder command or from the Terminal app. Access the Library folder in Finder: In Finder, choose Go Go To Folder In the Go To The Folder field, enter /library/ Click Go. Access the Library folder directly through the Terminal: Click the Spotlight Search.

Photos in your System Photo Library are available in apps like iMovie, Pages, and Keynote. You can also sync them to iOS devices and view them on Apple TV. And if you want to use your own images as your desktop picture or screen saver, the images need to be in your System Photo Library before you can select them in System Preferences.

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If you have only one photo library, then it's the System Photo Library. Otherwise, the first photo library that you create or open in Photos will become the System Photo Library. If you have more than one library, you might need to designate a System Photo Library, so other apps can access the photos and videos you want them to use.

Follow these steps to designate a System Photo Library:

1. Quit Photos.
2. Hold down the Option key and open Photos. One of the photo libraries is already designated as YourLibraryName (System Photo Library).
3. Choose the library you want to designate as the System Photo Library.
4. After Photos opens the library, choose Photos > Preferences from the menu bar.
5. Click the General tab.
6. Click the Use as System Photo Library button.
   

If you open a second or different library in the Photos app, and you haven't designated it as the System Photo Library, other applications will use photos from the original System Photo Library. Hold down the Option key when you open Photos to see which library is set as the System Photo Library.

iCloud and the System Photo Library

You can use iCloud Photos, Shared Albums, and My Photo Stream only with the System Photo Library. If you choose a different library in Photos without designating it as the System Photo Library, the iCloud tab in Photos preferences is disabled:

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If you designate a new library as the System Photo Library and then turn on iCloud Photos, the photos and videos in the new library will merge with those already in your iCloud Photos. If you want to keep the contents of your photo libraries separate, don’t turn on iCloud Photos for more than one library in Photos.

On our system, we see our Photo Library is in our Dropbox, but yours will almost likely show up in your user folder.We click the the “Show in Finder” button and here’s where our “Photos Library” is located. Maybe it’s become corrupted and Photos won’t open, or maybe you just want to start fresh and archive your old one.Regardless, to create a new System Photo Library, first open the location where your current system library is and drag it to a backup spot if you want to keep it (recommended). We want to move it back to our user folder so Dropbox stops constantly updating.To move our Photos Library, we drag it to its new location, double-click it, and the Photos app will now point to it.So, that was pretty easy. We’ll next show you how to create a completely new System Photo Library. Creating a New System Photo LibraryThere are any number of reasons you might want to create a new system library in Photos.