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.
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:
- How to rename the photos after download.
- Navigate to Photos to find the new 'Memories' tab in the center of the app, where you can scroll through your personally curated list of memories and choose whichever one you wish to edit and share.
- Locate the library in your /Home/Pictures/ folder and rename it as you rename any file. Photos opens a default library named Photos.library. You will need to point Photos to the desired library then use Photos preferences to set it as the 'system library.' Alternatively, hold down the OPTIONkey then start Photos.
To rename several files of the same kind on your Mac at once, follow the steps below. In our example we're going to be batch renaming some photos. Open a Finder window and locate the files you. How to create a new library with Photos for Mac. You can create a new library for your photos at any time with Photos for Mac. To do so, make sure that you quit Photos and reopen it with the following method to get the Library options. Hold down the Option key on your keyboard. Double-click on Photos on your Mac.
- Quit Photos.
- Hold down the Option key and open Photos. One of the photo libraries is already designated as YourLibraryName (System Photo Library).
- Choose the library you want to designate as the System Photo Library.
- After Photos opens the library, choose Photos > Preferences from the menu bar.
- Click the General tab.
- 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:
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.
Prepare your external drive
You can store your library on an external storage device, such as a USB or Thunderbolt drive formatted as APFS or Mac OS Extended (Journaled). However, you can't move your library to a disk that's used for Time Machine backups.
To prevent data loss, Apple doesn't recommend storing photo libraries on external storage devices like SD cards and USB flash drives, or drives that are shared on a network.
Move your Photos library to an external storage device
How To Rename Photos Library
- Quit Photos.
- In the Finder, go to the external drive where you want to store your library.
- In another Finder window, find your library. The default location is Users > [username] > Pictures, and it's named Photos Library.
- Drag your library to its new location on the external drive. If you see an error, select your external drive's icon in the Finder, then choose File > Get Info. If the information under Sharing & Permissions isn't visible, click the triangle , then make sure the 'Ignore ownership on this volume' checkbox is selected. If it's not selected, click the lock button to unlock it, enter an administrator name and password, then select the checkbox.*
- After the move is finished, double-click Photos Library in its new location to open it.
- If you use iCloud Photo Library, designate this library as the System Photo Library.
Delete original library to save space
Rename Photos Batch
After you open your library from its new location and make sure that it works as expected, you can delete the library from its original location.
In a Finder window, go back to your Pictures folder (or whichever folder you copied your library from) and move Photos Library to the trash. Then choose Finder > Empty Trash to delete the library and reclaim disk space.
Open another Photos library
If you have multiple libraries, here's how to open a different one:
How Do I Rename Photos On My Mac
- Quit Photos.
- Press and hold the Option key while you open Photos.
- Select the library that you want to open, then click Choose Library.
Photos uses this library until you open a different one.
Learn more
If you have a permissions issue with your library, you might be able to resolve the issue by using the Photos library repair tool.
Photo Rename Tool
* If the volume isn't formatted APFS or Mac OS Extended (Journaled), or has been used for Time Machine backups but hasn't been erased, this checkbox will either not be present, or won't be selectable after unlocking. Erase and reformat the drive for this option to be available.