If you're running out of space on your Mac's internal drive, macOS Sequoia 15.1 includes a handy new feature that lets you install large apps directly to external storage. Here's how to use it to preserve space on your boot drive.

MacBook Pro OWC Envoy Ultra
Apple is known for charging customers a very high markup for additional storage when buying a new Mac. Given that internal storage usually can't be upgraded after purchase, it's no wonder that external drives are a popular solution for many Mac users who want the extra space but don't want to pay a premium for the privilege.

Until recently, macOS automatically installed new apps downloaded from the Mac App Store to a Mac's boot drive, which was not particularly helpful to users with dwindling internal storage. In macOS Sequoia 15.1, however, Apple has added a new option that lets you download and install apps that require more than 1GB of storage to an external drive. Anyone working with large apps like Final Cut Pro or Logic Pro, or gamers with space-consuming titles, will surely welcome this ability to download and install large apps to a separate disk.

Installing Mac Apps to External Storage

  1. Connect your external drive to your Mac.
  2. Open the App Store.
  3. Click App Store in the menu bar and select Settings....
  4. Check the box next to "Download and install large apps to a separate disk."
  5. Select your external drive from the dropdown menu.

install apps external disk mac app store

Some considerations to keep in mind: The feature only works with apps larger than 1GB, and your external drive must be connected when enabling the setting. (Make sure the drive you connect is APFS formatted.) Additionally, while apps will install to your external drive, bear in mind that, depending on the app, some app data may still be stored on your main drive.

It's also worth noting that you can't choose installation locations using this method on a per-app basis – it's an all-or-nothing setting for qualifying apps. Lastly, for the best experience, use a fast external SSD (or an internal SSD in an external enclosure) to ensure optimal app performance.

Top Rated Comments

CharlesS Avatar
2 hours ago at 08:17 am
Why would anyone need this? It's always been possible to have your apps on a separate drive. Just drag them over. LaunchServices will detect the apps in their new location and they'll just work. It's one of the best things about the Mac, and it's been that way basically since the beginning.
Score: 6 Votes (Like | Disagree)
Slix Avatar
3 hours ago at 08:00 am
This is convenient! You could always move big apps after downloading them to the external disk, since day one essentially on the Mac. But having it automatically happen for big apps is a nice option.
Score: 4 Votes (Like | Disagree)
kirky29 Avatar
3 hours ago at 08:00 am
Once again, a very Apple way of doing this... :-/
Score: 3 Votes (Like | Disagree)
CarAnalogy Avatar
2 hours ago at 08:08 am
A tiny step in the right direction. I don't know why it had to be this limited.

This is an absolute requirement to even begin to be taken seriously for games. Steam has had very flexible support for multiple libraries on multiple disks in whatever subfolder you choose, for like ten years.
Score: 3 Votes (Like | Disagree)
turbineseaplane Avatar
2 hours ago at 08:12 am
Anything other than "no longer charging extortion level SSD upgrade pricing", it would seem

:confused:
Score: 3 Votes (Like | Disagree)
Darmok N Jalad Avatar
2 hours ago at 08:16 am

Or you can move your Home folder to an external SSD - IF AND ONLY IF you plan to use the drive always connected.
You will however, always need to download the app and manually move it to the external drive.

I am using my Base M4 Mac mini like this with an external 4TB SSD
How well does the drive stay connected when the Mac idles/sleeps? Sometimes the biggest challenge to this approach is that the drive occasionally gets unmounted by the OS for some unknown reason, and then you have trouble until a reboot.
Score: 3 Votes (Like | Disagree)

Popular Stories

New Things Your iPhone Can Do in iOS 18

18 New Things Your iPhone Can Do in iOS 18.2

Wednesday November 13, 2024 2:09 am PST by
Apple is set to release iOS 18.2 next month, bringing the second round of Apple Intelligence features to iPhone 15 Pro and iPhone 16 models. This update brings several major advancements to Apple's AI integration, including completely new image generation tools and a range of Visual Intelligence-based enhancements. There are a handful of new non-AI related feature controls incoming as well....
airtag purple

AirTag 2 Rumored to Launch Next Year With These New Features

Sunday November 17, 2024 5:18 am PST by
Apple released the AirTag in April 2021, so it is now three over and a half years old. While the AirTag has not received any hardware updates since then, a new version of the item tracking accessory is rumored to be in development. Below, we recap rumors about a second-generation AirTag. Timing Apple is aiming to release a new AirTag in mid-2025, according to Bloomberg's Mark Gurman....
M4 MacBook Pros Thumb

M4 MacBook Pro Uses Quantum Dot Display Technology

Thursday November 14, 2024 4:19 pm PST by
The M4 MacBook Pro models feature quantum dot display technology, according to display analyst Ross Young. Apple used a quantum dot film instead of a red KSF phosphor film, a change that provides more vibrant, accurate color results. Young says that Apple has opted for KSF for prior MacBook Pro models because it doesn't use toxic element cadmium (typical for quantum dot) and is more...
iCloud General Feature

Apple Acknowledges iCloud Notes Disappearing and Explains How to Fix

Saturday November 16, 2024 9:45 am PST by
Earlier this month, we reported about some iPhone users temporarily losing all of their notes in the Notes app after accepting Apple's updated iCloud terms and conditions. Apple has now indirectly acknowledged this issue in a new support document that outlines steps to follow if your iCloud notes are not appearing on your iPhone, iPad, or Vision Pro. Fortunately, the notes can be re-synced...
iPhone XS Max Black Background

Apple Adds iPhone XS Max and More to Vintage/Obsolete Product Lists

Friday November 15, 2024 8:09 am PST by
Apple today added a few older iPhone and Apple Watch models to the vintage and obsolete products list on its website. Apple has now classified the iPhone 6s Plus and iPhone XS Max as "vintage" worldwide. Apple considers a device to be "vintage" once five years have passed since the company stopped distributing it for sale. Apple and Apple Authorized Service Providers sometimes offer repairs...