Mac System Photos Library

Jan 12, 2020 Apple hides the Library folder by setting a file system flag associated with the folder. You can toggle the visibility flag for any folder on your Mac; Apple just chose to set the Library folder's visibility flag to the off state by default. Here's how to change it.
Apr 22, 2015 Photos for Mac lets you work with multiple libraries. Learn how to choose a default library, open another library, and merge multiple libraries in iCloud Photo Library. Or the System Photo.

Mac Os Photos Library Missing
Mac System Photos Library For Mac
Mac System Photos Library For Free

Mar 18, 2020 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.

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.)

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:

You have a giant Photos library (and, if you use iCloud Photo Library, you want to ensure you have a secondary backup of everything in that library)
You frequently swap computers and want to work on your images from any Mac
Your library isn't huge, but you'd prefer to save space on your Mac for other files
You share a computer with other users and you have limited drive space
If you're working with space constraints on your primary computer, it's one of the easiest ways to back up your full iCloud Photo Library

That said, there are some downsides, too. Here are some reasons you might not want to use an external drive:

You don't have a big enough library to warrant moving it off your Mac
You don't want to have to worry about always having your external drive connected to view and edit your images
You use a laptop frequently and can't afford an SSD, and you don't want to risk breaking your disc-based hard drive by constantly moving it
You don't want to accidentally create duplicate libraries that can't be connected to iCloud Photo Library (because your offsite library is connected)
Unless you purchase a speedy drive, working externally is almost always slower than working on your default hard drive
You don't want to spend the money on an external drive
If you use an automated backup service for your computer, you'll have to set up a second set of rules for backing up your hard 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:

Get a drive that's at least 1-2TB in space, preferably 4TB. With the iPhone able to save 4K video, our space needs aren't shrinking anytime soon: The bigger hard drive you can afford, the better.
If you're buying a stationary hard drive, buying a disc-based hard drive is great, but buy good brands — don't try and save $50 on an off-brand hard drive. It's rarely worth the HDD failure.
If you're buying a portable hard drive, consider SSD: It's very pricey in comparison to a disc-based drive, but if you know you'll be frequently moving around — especially if you plan to move around with the drive connected — you want a drive that can take a little rumble and tumble without skipping or failing.
Hard drive speeds are important, too: The faster a drive's write speed, the quicker your images will copy; the faster a drive's read speed, the easier it will be for you to view images or video and edit them, too.

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

Connect an external drive to your Mac via USB, USB-C, or Thunderbolt.
Open a new Finder window.
Open your external drive in that window.
Open a new Finder window. Don't close your previous window (open to your external drive), as you'll need it shortly.
Click the Go menu and navigate to your Home folder.
Select the Pictures folder.
Select your old library.
Drag it to your external drive in the other Finder window.

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.)

Open Photos on your Mac.
Go to the Photos menu.
Select Preferences.
Click on the iCloud tab.
Uncheck iCloud Photo Library.
Press Remove from Mac to remove any undownloaded low-resolution items from this library.
Quit Photos.

Step 3: Make your new library your system default

Now, it's time to make your newly-copied Photos library your system default.

Open Photos on your Mac.
Go to the Photos menu.
Select Preferences.
Click Use as System Photo Library.

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.)

Open Photos on your Mac.
Go to the Photos menu.
Select Preferences.
Click on the iCloud tab.
Check iCloud Photo Library.
Click Download Originals to this Mac.
Wait for your Mac to download your images from iCloud. (Depending on the size of your iCloud library and your internet connection, this may take up to 24 hours; don't disconnect your external drive or turn off your Mac during this time.)

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!

Open a new Finder window.
Click the Go menu and navigate to your Home folder.
Select the Pictures folder.
Select your old library.
Drag it to the Trash (or press Command-Delete on your keyboard).
Empty the Trash.
Open a new Finder window. Don't close your previous window (open to the Pictures folder), as you'll need it later.
Select your external drive.
Right-click (or control-click) on your copied Photos library on your external drive.
Select Make Alias.
Drag the alias to the Pictures folder.
Rename the alias to remove the 'alias' part of its name.

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.)

Open Photos on your Mac.
Go to the Photos menu.
Select Preferences.
Click on the iCloud tab.
Uncheck iCloud Photo Library.
Press Remove from Mac to remove all low-resolution items from this library.
Press Remove from Mac once more to confirm.
Quit Photos.

Step 2: Create your new Photos library

Once you've done this, it's time to create a new library.

Connect an external drive to your Mac via USB, USB-C, or Thunderbolt.
Option-click (and continue holding down option) when launching the Photos app on your Mac.
When it asks you to choose a library, click on Create New….
Name your library.
Press the Down arrow to expand the File picker and choose your external drive as the new location.
Press OK to save it to your external drive.

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.

Open Photos on your Mac.
Go to the Photos menu.
Select Preferences.
Click Use as System Photo 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.)

Open Photos on your Mac.
Go to the Photos menu.
Select Preferences.
Click on the iCloud tab.
Check iCloud Photo Library.
Click Download Originals to this Mac.
Wait for your Mac to download your images from iCloud. (Depending on the size of your library and your internet connection, this may take up to 24 hours; don't disconnect your external drive or turn off your Mac during this time.)

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!

Open a new Finder window.
Click the Go menu and navigate to your Home folder.
Select the Pictures folder.
Select your old library.
Drag it to the Trash (or press Command-Delete on your keyboard).
Empty the Trash.
Open a new Finder window. Don't close your previous window (open to the Pictures folder), as you'll need it later.
Select your external drive.
Right-click (or control-click) on your new Photos library.
Select Make Alias.
Drag the alias to the Pictures folder.
Rename the alias to remove the 'alias' part of its name.

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.

Questions?

Let us know in the comments.

Updated March 2019: Updated for macOS Mojave.

Serenity Caldwell contributed to an earlier version of this post.

iCloud Photo Library: The Ultimate Guide

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Backing up: The ultimate guide

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Apple reminds us all that 'creativity goes on' in new YouTube video

Apple's latest YouTube video knows just how to tug at the heartstrings.

So, your Mac is running out of storage. You try to figure out what’s taking up your disk space by clicking the Apple logo on the top-left of the screen, selecting About This Mac, and hitting the Storage tab.

To your surprise, you see a yellow bar representing “System” that seems to occupy way more space than you think it should. In the example above, it only shows 207 GB, but take a look at this Apple discussion — some Mac users report that System Storage takes an astonishing 250 GB.

Worse yet, you have no idea what’s included in “System” storage, because clicking the “Manage” button brings you to this System Information window… and the “System” row is greyed out.

Why does my Mac system require so much space?

What does it contain?

Is it safe to remove some of those system files?

How do I regain more storage space?

Questions like these may easily get to your head. Although my Mac now has a good amount of disk space available, I’m always wary of files that are taking up more space than they should.

I have no idea why “System” is greyed out while “Documents,” “System Junk,” “Trash,” etc. allow you to review the files based on size and type. My hunch is that Apple does this on purpose to prevent users from deleting system files that could lead to serious issues.

What Files Are Included in System Storage on Mac?

During my research, I found many people report that Apple counts iTunes backup files and app caches (e.g. Adobe video cache files) in the System category.

Since it’s greyed out and we are unable to click on that category for deeper analysis, we’ll have to use a third-party app to assist.

CleanMyMac X is perfect for this kind of analysis. Since I tested the app in our best Mac cleaner review, it immediately came to my head when I saw “System” was greyed out in Storage. Note that CleanMyMac isn’t freeware, but the new “Space Lens” feature is free to use and it allows you to scan your Macintosh HD, and then show you an in-depth overview of what’s taking up disk space on your Mac.

Step 1:Download CleanMyMac and install the app on your Mac. Open it, under “Space Lens” module, first click the yellow “Grant Access” button to allow the app to access your Mac files and then select “Scan” to get started.

Mac Os Photos Library Missing

Step 2: Soon it’ll show you a folder/file tree and you can hover your cursor over each block (i.e. a folder). There you can find more details. In this case, I clicked “System” folder to continue.

Step 3: The file breakdown below indicates that some Library and iOS Support files are the culprits.

The interesting part is that the System file size shown in CleanMyMac is much smaller than the size shown in System Information. This puzzles me and makes me believe that Apple definitely has counted some other files (not real system files) in the System category.

What are they? I have no clue, honestly. But as reported by other Mac users who experienced the same issue, they said Apple also considers app caches and iTunes backup files as System files.

Out of curiosity, I ran CleanMyMac again for a quick scan. That app found 13.92 GB in iTunes Junk. Further review revealed that the junk files are old iOS device backups, software updates, broken downloads, etc.

But even after adding this amount to the original system files returned by CleanMyMac X, the total size is still a bit less than what’s returned in System Information.

If cleaning the System Storage is still not enough to bring your Mac available disk space to a normal level (i.e. 20% or more), see below.

What Else Can I Do to Reclaim More Disk Space?

There are tons of ways out there. Here are a few of my favorites that should help you get back a decent amount of space quickly.

1. Sort all files by size and delete old large files.

Open Finder, go to Recents and look at the Size column. Click on it to sort all recent files by file size (from large to small). You’ll have a clear overview of what items are eating up a large amount of space, e.g. From 1 GB to 10 GB, and from 100 MB to 1 GB.

On my MacBook Pro, I found a few large videos that could be transferred to an external drive.

Note: If the Size column doesn’t show up, click on the Settings icon and select Arrange By > Size.

2. Remove duplicate files.

Don’t forget those duplicates and similar files! They can stack up without you being aware of it. Finding them is sometimes time-consuming. That’s what Gemini 2 is designed for. Simply select a few frequently used folders (e.g. Documents, Downloads, etc.) in the main zone of Gemini.

It then scans them and returns all the duplicate files that might be worth removing. Of course, it’s always a good practice to review them before doing so. You can also read more from our detailed Gemini review here.

Wrapping It Up