Jul 18, 2019 Photo Library First Aid is the build-in feature of iPhoto. It is the most direct way to resolve issues such as the library appearing to be unreadable, missing photos after macOS Catalina update, etc. Now, let's start to recover photos disappeared from Mac using Library First. You can force Photos to try to repair the library by holding ⌥option and ⌘command whilst launching Photos. Photos.app will try to repair the library and it may ask you for administrator privileges. Photos library could not be created Photos could not upgrade your library.
Your Photos library holds all your photos, albums, slideshows, and print projects. If your library is large, and you want to free up storage space on your Mac, turn on iCloud Photo Library and use Optimize Mac Storage, or move your library to an external drive.
Before you start, be sure to back up your library.
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Prepare your 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).1 Find out how to check the format of your external storage device.
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
- 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 , then make sure the 'Ignore ownership on this volume' checkbox is selected. If it's not selected, click to unlock it, enter an administrator name and password, then select the checkbox.2
- 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
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:
- 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.
Mac Photos Updating Library
If you have a permissions issue with your library, you might be able to resolve the issue by using the Photos library repair tool.
Closing The Library Photos Mac
1. You can't move your library to a disk that's used for Time Machine backups.
SDMMobileDevice (OS X framework written in C that can be used interchangeably with Apple's private framework MobileDevice.framework) MobileDeviceAccess (similar to above, but written in Objective-C) MobileDevice.h (old reverse engineered header for interfacing with MobileDevice library) Private Functions Obtaining address. In order to obtain. Mac os x system library privateframeworks.
2. 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.