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1. Photos Library Grayed Out Mac Password
2. Photo Library Grayed Out Mac
3. Taskbar Color Settings Grayed Out
4. Mac Photo Library Greyed Out

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.

Apr 13, 2013  Yes iPhoto is the default program for handling photos on the Mac. And it s trivial to change that. If you do like iPhoto then select your photo manager, launch iPhoto and in the iPhoto preferences set the action when a camera is connected to launch your choice - or to do nothing. IPhito works like it works. No one here can change that. Jan 31, 2012  To open the Rebuild Photo Library tool, first quit iPhoto if the program is open. Next, hold down the Mac’s Command and Option keys and click the.

Before you start, be sure to back up your library.

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.

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Move your Photos library to an external storage device

1. Quit Photos.
2. In the Finder, go to the external drive where you want to store your library.
3. In another Finder window, find your library. The default location is Users > [username] > Pictures, and it's named Photos Library.
4. 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
   
   
5. After the move is finished, double-click Photos Library in its new location to open it.
6. 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.

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Open another Photos library

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If you have multiple libraries, here's how to open a different one:

1. Quit Photos.
2. Press and hold the Option key while you open Photos.
3. 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.

1. You can't move your library to a disk that's used for Time Machine backups.

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.

2016-12-29  This library folder is part of the system and contains support for system processes and utilities. As to your list of deleted items: Clearing caches will usually not free storage permanently. The Mac will have to recreate the cached files. They are created to save items that might be needed again and to speed up the mac. Is deleting caches in your mac library safe. Summary: Have you deleted macOS system cache or log library files mistakenly without taking a backup?Read on to learn how you can recover deleted caches and logs. Most websites use cookies and create temporary caches on your Mac when you browse the Internet. 2020-3-30  Yes, it is safe. That said, don't just delete all the contents of your cache folder without reason. It can be beneficial to clear out those taking up the significant space in your /Library/Caches/ if you need to free some up, but you really shouldn't clear any contents of your /System/Caches unless there is a problem. As would be expected, you. 2017-10-25  Storing data in cache makes your Mac run faster because it can obtain the data quickly. Sometimes the cache gets corrupt, though, because of software updates, conflicts, and unexpected quits, and this can cause problems. Find out how to delete the library cache occasionally to maintain your Mac’s performance.+ +How to Delete Cache+. How To Clear Cache on Mac? Deleting the Web Cache (In Safari): If you’re a Mac user, it is entirely possible that Safari is your default browser. Surfing the Internet of course ends up giving a lot of cache files, which need or should I say MUST be deleted before it clogs all your space.

Photos in your System Photo Library are available in apps like iMovie, Pages and Keynote. You can also sync them to iOS devices and Apple TV via iTunes. 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, then 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:

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.