Optimized Storage in macOS Sierra and later* can save space by storing your content in iCloud and making it available on demand. When storage space is needed, files, photos, movies, email attachments, and other files that you seldom use are stored in iCloud automatically. Each file stays right where you last saved it, and downloads when you open it. Files that you’ve used recently remain on your Mac, along with optimized versions of your photos.
* If you haven't yet upgraded to macOS Sierra or later, learn about other ways to free up storage space.
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Find out how much storage is available on your Mac
Choose Apple menu > About This Mac, then click Storage. This is an overview of available storage space on your Mac, as well as the space used by different categories of files:
Click the Manage button to open the Storage Management window, pictured below. (The Manage button is available only in macOS Sierra or later.)
Manage storage on your Mac
The Storage Management window offers recommendations for optimizing your storage. If some recommendations are already turned on, you will see fewer recommendations.
Store in iCloud
Click the Store in iCloud button, then choose from these options:
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- Desktop and Documents. Store all files from these two locations in iCloud Drive. When storage space is needed, only the files you recently opened are kept on your Mac, so that you can easily work offline. Files stored only in iCloud show a download icon , which you can double-click to download the original file. Learn more about this feature.
- Photos. Store all original, full-resolution photos and videos in iCloud Photos. When storage space is needed, only space-saving (optimized) versions of photos are kept on your Mac. To download the original photo or video, just open it.
- Messages. Store all messages and attachments in iCloud. When storage space is needed, only the messages and attachments you recently opened are kept on your Mac. Learn more about Messages in iCloud.
Storing files in iCloud uses the storage space in your iCloud storage plan. If you reach or exceed your iCloud storage limit, you can either buy more iCloud storage or make more iCloud storage available. iCloud storage starts at 50GB for $0.99 (USD) a month, and you can purchase additional storage directly from your Apple device. Learn more about prices in your region.
Optimize Storage
Click the Optimize button, then choose from these options.
- Automatically remove watched movies and TV shows. When storage space is needed, movies or TV shows that you purchased from the iTunes Store and already watched are removed from your Mac. Click the download icon next to a movie or TV show to download it again.
- Download only recent attachments. Mail automatically downloads only the attachments that you recently received. You can manually download any attachments at any time by opening the email or attachment, or saving the attachment to your Mac.
- Don't automatically download attachments. Mail downloads an attachment only when you open the email or attachment, or save the attachment to your Mac.
Optimizing storage for movies, TV shows, and email attachments doesn't require iCloud storage space.
Empty Trash Automatically
Empty Trash Automatically permanently deletes files that have been in the Trash for more than 30 days.
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Reduce Clutter
Inbox mail. Reduce Clutter helps you to identify large files and files you might no longer need. Click the Review Files button, then choose any of the file categories in the sidebar, such as Applications, Documents, Music Creation, or Trash.
You can delete the files in some categories directly from this window. Other categories show the total storage space used by the files in each app. You can then open the app and decide whether to delete files from within it.
Learn how to redownload apps, music, movies, TV shows, and books.
Where to find the settings for each feature
The button for each recommendation in the Storage Management window affects one or more settings in other apps. You can also control those settings directly within each app.
- If you're using macOS Catalina, choose Apple menu > System Preferences, click Apple ID, then select iCloud in the sidebar: Store in iCloud turns on the Optimize Mac Storage setting on the right. Then click Options next to iCloud Drive: Store in iCloud turns on the Desktop & Documents Folders setting. To turn off iCloud Drive entirely, deselect iCloud Drive.
In macOS Mojave or earlier, choose Apple menu > System Preferences, click iCloud, then click Options next to iCloud Drive. Store in iCloud turns on the Desktop & Documents Folders and Optimize Mac Storage settings. - In Photos, choose Photos > Preferences, then click iCloud. Store in iCloud selects iCloud Photos and Optimize Mac Storage.
- In Messages, choose Messages > Preferences, then click iMessage. Store in iCloud selects Enable Messages in iCloud.
- If you're using macOS Catalina, open the Apple TV app, choose TV > Preferences from the menu bar, then click Files. Optimize Storage selects “Automatically delete watched movies and TV shows.”
In macOS Mojave or earlier, open iTunes, choose iTunes > Preferences from the menu bar, then click Advanced. Optimize Storage selects “Automatically delete watched movies and TV shows.” - In Mail, choose Mail > Preferences from the menu bar, then click Accounts. In the Account Information section on the right, Optimize Storage sets the Download Attachments menu to either Recent or None.
Empty Trash Automatically: From the Finder, choose Finder > Preferences, then click Advanced. Empty Trash Automatically selects “Remove items from the Trash after 30 days.”
Other ways that macOS helps automatically save space
With macOS Sierra or later, your Mac automatically takes these additional steps to save storage space:
- Detects duplicate downloads in Safari, keeping only the most recent version of the download
- Reminds you to delete used app installers
- Removes old fonts, languages, and dictionaries that aren't being used
- Clears caches, logs, and other unnecessary data when storage space is needed
How to free up storage space manually
Even without using the Optimized Storage features of Sierra or later, you can take other steps to make more storage space available:
- Music, movies, and other media can use a lot of storage space. Learn how to delete music, movies, and TV shows from your device.
- Delete other files that you no longer need by moving them to the Trash, then emptying the Trash. The Downloads folder is good place to look for files that you might no longer need.
- Move files to an external storage device.
- Compress files.
- Delete unneeded email: In the Mail app, choose Mailbox > Erase Junk Mail. If you no longer need the email in your Trash mailbox, choose Mailbox > Erase Deleted Items.
Learn more
- When you duplicate a file on an APFS-formatted volume, that file doesn't use additional storage space on the volume. Deleting a duplicate file frees up only the space required by any data you might have added to the duplicate. If you no longer need any copies of the file, you can recover all of the storage space by deleting both the duplicate and the original file.
- If you're using a pro app and Optimize Mac Storage, learn how to make sure that your projects are always on your Mac and able to access their files.
BestCD/DVD Drives for MaciMore2019
If you've recently upgraded to a new iMac or MacBook Pro, you're probably going to need an optical drive if you want to continue importing your movies and music to iTunes, or just access the content on your discs. If you think you'll need an external drive mostly for Blu-Ray discs, most of them will also play DVDs and CDs but are not readable/writable drives for CDs or DVDs. Either way, here are some solid options.
No adapter needed: Confoly USB-C Superdrive
Best Time Machine Drive
Staff pickI have this model CD/DVD drive for my Mac computers for multiple reasons. For one, it's practically the same as Apple's SuperDrive in every way, and second, it's got a USB-C cable so I can connect it to my MacBook Pro without needing any additional adapters. Oh, there's a third reason, too. It comes with a USB-A adapter so I can connect it to any standard USB port.
$49 at AmazonCupertino's own: Apple USB SuperDrive
Apple's branded playable/burnable CD/DVD drive is the perfect complement to your iMac or MacBook Pro unless you have a late 2016 or newer MacBook Pro, in which case you'll need the USB-C to USB adapter. It's not much larger than the size of a CD case, so it fits snug in your computer bag without taking up a lot of room. All you have to do is plug it into your computer using the USB cable. There's no need for special software or external buttons that might get broken. It's solid, simple, and it looks great with your Mac products.
$79 at AmazonUSB-C and USB 3.0: VisionTech External CD/DVD Drive
With no eject button on the device and powered by USB the VisionTech External CD/DVD Drive is very slim and compact. You can tuck it away anywhere that makes the most sense for you. Preprogrammed for both Mac and Windows, you shouldn't need to do any formatting to get the drive to work. Plus, this drive has both USB 3.0 and USB-C cables, meaning you can plug it right into your MacBook with no adapter needed.
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$31 at AmazonInexpensive choice: LG GP65NB60
LG makes a CD/DVD drive that is lightweight, fast, and doesn't cost much. It's made of a hard shell plastic material, so it isn't going to feel as sturdy as Apple's SuperDrive or Confoly's USB-C drive. However, in exchange, you get something that's about as light as a CD in its case.
$25 at AmazonAlso worth considering: Verbatim External CD / DVD Writer
Drive For Macbook Pro
Here's another inexpensive choice, this time from Verbatim. Weighing just 12 ounces, this CD/DVD burner is compact, lightweight, and USB powered. It's a suitable choice if you need to back up sensitive data, as well as music and video libraries.
$24 at AmazonStill serving a need
There are a lot of reasons why you'd need a CD/DVD drive for your Mac, despite the concept being heavily outdated in 2019. Parallel for mac. Whether you want to digitize your DVD collection or just view a disc on your computer, an optical drive is cheap and sometimes necessary.
As you can see, we've selected the Confoly USB-C Superdrive as our favorite since it's super similar to Apple's SuperDrive and you don't need adapters to utilize it. If you're working with a small budget, take a look at the LG GP65NB60. It gets the job done for a surprisingly low price.
Drive For Mac Synology
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