All your photos on all your devices. ICloud Photos gives you access to your entire Mac photo and video library from all your devices. If you shoot a snapshot, slo-mo, or selfie on your iPhone, it’s automatically added to iCloud Photos — so it appears on your Mac, iOS. Feb 21, 2020 If your Photos library is automatically updated with iCloud Photos, the entire contents of the library will re-updates with iCloud when the repair process completes. Bonus Tip: Create a new Photos Library. The other alternative way to repair corrupted Photos Library is to create a new Photos Library on Mac. Why Photos for macOS says an image is an unsupported image format. But iCloud Photo Library sync copies the exact file. Mac 911 can’t reply to — nor publish an answer to — every question.
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
Mac Photos Library Format Software
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.
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.
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Free up your space by transferring your Photos library to another external hard drive. By freeing up space you will have valuable space for your work on your Mac. In addition to this, we will help you to back up your whole photo library to iCloud.
Why store photos on external drive
In today’s world, everyone loves to capture photos of every single moment and wants to save all those moments in his/her personal devices like Mac. But saving all your photos can fill-up your Mac storage quickly and you may face the shortage of space.
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There are many options to store your photos data. One of them to store your photos on iCloud photo library but the drawback of saving your photos on iCloud is, if you delete the photo from your device it will be deleted from iCloud as well.
One question raised up here is that what we can do to store all our photos to some safe place if we are running out of space on Mac?
Fortunately, you have visited the right place to find the solution to your problem. There is a safer and easy way to transfer your entire photo library from your Mac to your external drive. The best of this trick is whenever you need to see your photos on your Mac you just need to open photo library app on your Mac it will automatically take you to your saved photos in external hard drive until unless it is plugged in.
Snapshot of the guide
There is a quick snapshot of the guide so you can understand quickly how to move the library to external drive.
- Prepare your external hard drive to move Photo Library. Make sure drive is formatted as MacOS Extended Journaled.
- Go to the location of the Photo library and move it to external drive.
- Set the external library as a System Photo Library (So whenever you open the Photos app it will open the photos library from the external hard drive.)
- After completing trasfer to drive, make sure this external drive is connected to your Mac whenever you want to access photos.
Our article will help you to move your photos from Mac to external hard drive. Continue reading the steps are about to start.
Do not worry if you have already stored your photos on iCloud photo library. Our article will help you to get back your already saved photos in iCloud photos library and will help you to move them to external hard drive. Here is how to do it.
System Photo Library vs Other Library
When you run Photos app on your Mac first time this will ask you to create a new or use an old library. That default Photo library became the system library automatically. Only System Photo Library are allowed to access iCloud services.
You can create multiple other libraries and work with photos only in one library at a time. To work in another library you have to switch the library. You can also change and set one of the other libraries as a System library.
How to transfer the Photos library to a hard drive
First, make it sure the hard drive you are going to use for Photos library is faster and have enough space. It will save your time and stored your memories quickly. A good hard drive always keeps your stuff secure and there are fewer chances of losing your data.
Before going step by step to move your photo library to external hard, first make it sure that your external hard drive is already formatted for Mac OS Extended (journaled). If it is not formatted for Mac first erase all the data from it and format and choose the option of Mac OS Extended (journaled). Use the Disk Utility on your Mac to erase any hard drive (When you erase any drive in mac everything will be deleted, so please save any important data ).
- Find the Photos Library on your Mac, it will be in your Pictures folder. Click the Go menu on the top and then select Home option from the menu.
- Open the Pictures folder and there you will find the Photos library.
TIP: In order to see how much storage your photos have taken, just Ctrl+Click on the photos library icon and click on Get Info. Now you can make sure that you have enough storage in your external hard drive. - It’s time to copy your Photos Library to your external hard drive using drag and drop trick. Now sit back and wait until copies over. The time of transferring photos depends on the size of your Photo Library.
- When transferred completed, press and hold the Option/Alt key from keyboard and click the Photos app icon from Dock to open it. Keep holding the keyboard key until you see a window otherwise this will open the Photos app.
- You will see a new window to choose the library. On that window hit the button Other library. Navigate to the new location on your external hard drive and choose the Photo Library.
- If there is a message that shows “there are some items that need to be downloaded from iCloud Photo library” then you need to click on delete incomplete items and download all those incomplete items.
- Set a photo library as System Photo Library
- We have already moved the library to an external drive now its time to set it as System Photo Library. Doing that will allow it to use iCloud service.
- Open the Photo Library from the external drive.
- Click Photos men and then select the Preferences option.
- On the next window click General and then click Use as System Photo Library button (this will help you to get it to work with iCloud Photo Library)
TIP: Remember this is the step you need to perform in future If you accidentally unlinked the external drive’s photo library from the Photos app. - Go to System Preferences then iCloud then Photos then Options, and choose iCloud Photo Library to turn that back on. See if you have stored all the photos here.
Note: you will need to plug in your external hard drive in order to see your photos).
Delete Photo Library from Mac
Once you have confirmed that all the photos in the library moved to the external drive. You can delete the Photo Library from your Mac computer. Go to the Pictures folder and delete it to free up space from your mac.
How to back up your iCloud Photo Library
If you want to move all your photos which you have already backed up to your iCloud photo library to a storage device connected to your Mac. Follow our step by step guide above, but you need to download all the images from iCloud first.
If you have already transferred your Photos library onto the external storage device, now you need to follow these steps.
- Open Photos on your Mac.
- Click Photos then click on Preferences.
- Click on the iCloud tab.
- Choose Download originals to this Mac.
Export Photos Library Mac
Now all your iCloud photos will be saved on the storage device. (If you are running short of space you would probably not want to do that)
Mac Photo Library Management
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