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.
Prepare your drive
Repeat for each library. Or, you can export from Photos: Option-launch Photos and select an iPhoto library you want to merge with another. After conversion, choose View Albums and double-click All Photos. Choose Edit Select All. Either: Choose File Export Unmodified Originals and click Export. Oct 25, 2019 How to switch between Libraries in Photos for Mac. When you create a new library, you may still want to go back to a previous library for something. Fortunately, it's easy to switch between multiple libraries. Make sure that Photos is not open (quit if it is). Hold down the Option key on your keyboard. Double-click on Photos. Mar 18, 2020 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.
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
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:
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.
Apple's photo management software for the Mac, Photos, has grown to be a fairly competent all-purpose storage locker. But as your photo and video library grows — and especially if you've taken advantage of iCloud Photo Library — you may find that your Photos library strains to fit on your Mac's hard drive.
While there are options to keep your Mac from running out of space, like optimizing your photo storage if you use iCloud Photo Library, it comes at a cost: Without a fully-stored Photos library, you won't be able to create secondary backups of your images and video. (And as good as iCloud has become, your photos and video are precious enough that they're worth keeping backed up in multiple places.) How to pip install libraries python 3 mac.
There is an alternative: Moving your Photos library to an external drive (or creating an entirely separate library and syncing it with iCloud). Here's how to do it, and some reasons why you should — and shouldn't! — consider it for your needs.
Why you should (and shouldn't) use an external drive with Photos for Mac
There are a number of reasons why an external drive might make sense when you're working with Photos for Mac:
That said, there are some downsides, too. Here are some reasons you might not want to use an external drive:
Best external drives for storing photos
Okay, so you've decided to move your Photos library over to an external drive. What next? If you already have an external drive, you can always use it for storing your Photos library (and save on cash). But if you're considering getting a new drive for this endeavor, here's what I suggest:
Want some recommendations for specific external hard drives? We've got those, too.
How to move your current Photos library to an external drive and use it as your primary library
As with creating a new library, moving your library to your external drive is a multi-step process. Here's how to go about it.
Step 1: Copy over your Photos library
Your library will begin to copy over to your external drive. Depending on the size of your library and speed of your drive, this can take anywhere from a few minutes to several hours, so be patient. Don't unplug your drive or turn off your computer during this process.
Step 2 (if you use iCloud): Turn off iCloud sync on your old library
Before you open your copied Photos library on the external drive, you have to disassociate the library on your Mac from iCloud. (If you don't use iCloud Photo Library, you can skip these steps.)
Step 3: Make your new library your system default
Now, it's time to make your newly-copied Photos library your system default.
Step 4 (if you use iCloud): Connect your new library to iCloud
Your external library is now set up to be your system default, but it's not currently connected to iCloud. If you use iCloud Photo Library and want to keep that connection active so that you can continually download items you've stored, read on. (Otherwise, you can skip this step.)
Create New Photo Library Mac
Once your library has fully synced and downloaded images, you can disconnect your drive; whenever you want to use your Photos library, you now need to connect your drive to your Mac.
Step 5: Get rid of your old library
A personal plea: Please, please, please make sure your library is fully copied and working on your external drive before you follow the steps below — once you've thrown away your original library, it's gone!
Now you have a direct link to your copied Photos library from the Pictures folder: This prevents your computer from accidentally creating multiple Photos libraries in case you forget to launch Photos with your external drive connected.
Note: If you're worried about accidentally creating libraries, you can always launch Photos by option-clicking on its icon in the Dock or Applications folder; this will give you the option of picking which library you'd like to launch.
How to create a new Photos library on your external drive and use it as your primary library
Creating a new library on your external drive is a multi-step process. Here's how to go about it.
Step 1 (if you use iCloud): Turn off iCloud sync on your old library
Before you create a new Photos library, you have to disassociate your current library as your system default. (If you don't use iCloud Photo Library, you can skip these steps.)
Step 2: Create your new Photos library
Once you've done this, it's time to create a new library.
Step 3: Make your new library your system default
You'll now have an empty library on your external drive. Next up: Making it your system library.
Step 4 (if you use iCloud): Connect your new library to iCloud
Your external library has now been set up from scratch. If you use iCloud Photo Library and want to download all the items you've stored there to have an external backup, read on. (Otherwise, you can skip this step.)
Once your library has fully synced and downloaded images, you can disconnect your drive; whenever you want to use your Photos library, you now need to connect your drive to your Mac.
Step 5: Get rid of your old library
A personal plea: Please, please, please make sure your new library is live and working on your external drive before you follow the steps below — once you've thrown away your original library, it's gone!
Now you have a direct link to your Photos library from the Pictures folder: This prevents your computer from accidentally creating multiple Photos libraries in case you forget to launch Photos with your external drive connected.
Note: If you're worried about accidentally creating libraries, you can always launch Photos by option-clicking on its icon in the Dock or Applications folder; this will give you the option of picking which library you'd like to launch.
Questions?
Let us know in the comments.
Updated March 2019: Updated for macOS Mojave.
Serenity Caldwell contributed to an earlier version of this post. View hidden library folder mac mojave.
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