Title: Openai/691c64c3-536c-8008-a507-c542c3a174f3 - freem URL Source: https://freemwiki.com/wiki/Openai/691c64c3-536c-8008-a507-c542c3a174f3 Markdown Content: _This conversation was exported from ChatGPT_[[1]](https://freemwiki.com/wiki/Openai/691c64c3-536c-8008-a507-c542c3a174f3#cite_note-1) ## gpt-5-1-thinking[[edit](https://freemwiki.com/index.php?title=Openai/691c64c3-536c-8008-a507-c542c3a174f3&veaction=edit§ion=1 "Edit section: gpt-5-1-thinking") | [edit source](https://freemwiki.com/index.php?title=Openai/691c64c3-536c-8008-a507-c542c3a174f3&action=edit§ion=1 "Edit section's source code: gpt-5-1-thinking")] ### User: how can i install macos 26.1 apps on external ssd?[[edit](https://freemwiki.com/index.php?title=Openai/691c64c3-536c-8008-a507-c542c3a174f3&veaction=edit§ion=2 "Edit section: User: how can i install macos 26.1 apps on external ssd?") | [edit source](https://freemwiki.com/index.php?title=Openai/691c64c3-536c-8008-a507-c542c3a174f3&action=edit§ion=2 "Edit section's source code: User: how can i install macos 26.1 apps on external ssd?")] how can i install macos 26.1 apps on external ssd? ### Assistant: You can run apps from an external SSD on macOS 26.1, but there are some limits and a few different ways to do it.[[edit](https://freemwiki.com/index.php?title=Openai/691c64c3-536c-8008-a507-c542c3a174f3&veaction=edit§ion=3 "Edit section: Assistant: You can run apps from an external SSD on macOS 26.1, but there are some limits and a few different ways to do it.") | [edit source](https://freemwiki.com/index.php?title=Openai/691c64c3-536c-8008-a507-c542c3a174f3&action=edit§ion=3 "Edit section's source code: Assistant: You can run apps from an external SSD on macOS 26.1, but there are some limits and a few different ways to do it.")] You can run apps from an external SSD on macOS 26.1, but there are some limits and a few different ways to do it. Here’s the practical picture. #### 0. What macOS allows / doesn’t allow[[edit](https://freemwiki.com/index.php?title=Openai/691c64c3-536c-8008-a507-c542c3a174f3&veaction=edit§ion=4 "Edit section: 0. What macOS allows / doesn’t allow") | [edit source](https://freemwiki.com/index.php?title=Openai/691c64c3-536c-8008-a507-c542c3a174f3&action=edit§ion=4 "Edit section's source code: 0. What macOS allows / doesn’t allow")] * You cannot globally tell macOS “install all apps to the external disk”. * Mac App Store apps and most .pkg installers will always install to the internal system volume. * Drag-and-drop apps (most .dmg apps with a single .app bundle) can live and run happily from an external SSD. * You can also put a full macOS installation on the external SSD and install everything there. So the method depends on the kind of app and how far you want to go. #### 1. Easiest: Install drag-and-drop apps directly on the external SSD[[edit](https://freemwiki.com/index.php?title=Openai/691c64c3-536c-8008-a507-c542c3a174f3&veaction=edit§ion=5 "Edit section: 1. Easiest: Install drag-and-drop apps directly on the external SSD") | [edit source](https://freemwiki.com/index.php?title=Openai/691c64c3-536c-8008-a507-c542c3a174f3&action=edit§ion=5 "Edit section's source code: 1. Easiest: Install drag-and-drop apps directly on the external SSD")] Good for standalone apps (e.g. Firefox, LibreOffice, VLC, etc.), not from the App Store. 1. Format the external SSD (if needed) - Open Disk Utility → View → Show All Devices. - Select the SSD → Erase… - Format: APFS - Scheme: GUID Partition Map - Name it e.g. ExternalSSD. 2. Create an Applications folder on it - In Finder, open the SSD (e.g. ExternalSSD). - Create a folder called `Applications`. 3. Install apps there - Open the app’s .dmg or installer. - Instead of dragging the app to /Applications, drag the .app to: - ExternalSSD/Applications/ - Optionally drag the app from that folder into the Dock. 4. First launch (Gatekeeper) - First time you open it: Control-click → Open, then confirm. - After that, you can launch it normally. ✅ This saves internal SSD space, but note: the app’s settings, caches and support files still go to your internal disk in ~/Library and /Library. #### 2. Full solution: Install macOS 26.1 itself on the external SSD[[edit](https://freemwiki.com/index.php?title=Openai/691c64c3-536c-8008-a507-c542c3a174f3&veaction=edit§ion=6 "Edit section: 2. Full solution: Install macOS 26.1 itself on the external SSD") | [edit source](https://freemwiki.com/index.php?title=Openai/691c64c3-536c-8008-a507-c542c3a174f3&action=edit§ion=6 "Edit section's source code: 2. Full solution: Install macOS 26.1 itself on the external SSD")] If you want everything (apps, libraries, system) on the external SSD, use it as a separate startup disk. ##### A. Prepare the external SSD[[edit](https://freemwiki.com/index.php?title=Openai/691c64c3-536c-8008-a507-c542c3a174f3&veaction=edit§ion=7 "Edit section: A. Prepare the external SSD") | [edit source](https://freemwiki.com/index.php?title=Openai/691c64c3-536c-8008-a507-c542c3a174f3&action=edit§ion=7 "Edit section's source code: A. Prepare the external SSD")] 1. Back up anything important on that SSD. 2. Open Disk Utility. 3. Select the external SSD device (top line, not its volume). 4. Click Erase… - Format: APFS - Scheme: GUID Partition Map - Name: e.g. macOS-External. ##### B. Install macOS 26.1 to the SSD[[edit](https://freemwiki.com/index.php?title=Openai/691c64c3-536c-8008-a507-c542c3a174f3&veaction=edit§ion=8 "Edit section: B. Install macOS 26.1 to the SSD") | [edit source](https://freemwiki.com/index.php?title=Openai/691c64c3-536c-8008-a507-c542c3a174f3&action=edit§ion=8 "Edit section's source code: B. Install macOS 26.1 to the SSD")] 1. Open Install macOS 26.1 (from Applications or the App Store). 2. When it asks where to install, click Show All Disks and choose macOS-External. 3. Let the installation finish (the Mac will reboot a few times). ##### C. Boot from the external SSD[[edit](https://freemwiki.com/index.php?title=Openai/691c64c3-536c-8008-a507-c542c3a174f3&veaction=edit§ion=9 "Edit section: C. Boot from the external SSD") | [edit source](https://freemwiki.com/index.php?title=Openai/691c64c3-536c-8008-a507-c542c3a174f3&action=edit§ion=9 "Edit section's source code: C. Boot from the external SSD")] On Apple Silicon: 1. Shut down the Mac. 2. Press and hold the Power button until you see “Loading startup options”. 3. Choose macOS-External. 4. Click Continue. Now, when you’re booted from the external system: * All apps you install (App Store, .pkg, .dmg) will be on the external SSD’s system volume. * Your internal macOS stays mostly untouched (good for testing or keeping it “clean”). You can later set the default startup disk in System Settings → General → Startup Disk. #### 3. Advanced: Move a big non-App-Store app + use a symlink[[edit](https://freemwiki.com/index.php?title=Openai/691c64c3-536c-8008-a507-c542c3a174f3&veaction=edit§ion=10 "Edit section: 3. Advanced: Move a big non-App-Store app + use a symlink") | [edit source](https://freemwiki.com/index.php?title=Openai/691c64c3-536c-8008-a507-c542c3a174f3&action=edit§ion=10 "Edit section's source code: 3. Advanced: Move a big non-App-Store app + use a symlink")] This is only for advanced use and not recommended for App Store apps. Example: you have a huge .app in /Applications you want to move. 1. Quit the app. 2. Move it to the external SSD, e.g.: ```bash sudo mv "/Applications/BigApp.app" "/Volumes/ExternalSSD/Applications/BigApp.app" 3. Create a symlink in /Applications:bash sudo ln -s "/Volumes/ExternalSSD/Applications/BigApp.app" "/Applications/BigApp.app"``` macOS and Launchpad will still “see” it in /Applications, but the bytes live on the SSD. ⚠️ Caveats: * Updates or installers may break or delete the symlink. * Code signing / Gatekeeper can sometimes be picky. * Don’t do this for system apps or App Store apps. #### 4. What you can’t really move cleanly[[edit](https://freemwiki.com/index.php?title=Openai/691c64c3-536c-8008-a507-c542c3a174f3&veaction=edit§ion=11 "Edit section: 4. What you can’t really move cleanly") | [edit source](https://freemwiki.com/index.php?title=Openai/691c64c3-536c-8008-a507-c542c3a174f3&action=edit§ion=11 "Edit section's source code: 4. What you can’t really move cleanly")] Even if you put the .app on the SSD: * App support data (~/Library/Application Support/...) * Caches (~/Library/Caches/...) * Preferences (~/Library/Preferences/...) …will stay on your internal disk. That’s just how macOS is designed. For Apple apps like Photos, Music, etc., the better move is: * Keep the app internal (can’t move). * Put the library (Photos Library, Music Library, etc.) on the external SSD and point the app there. #### 5. Summary: what to actually do[[edit](https://freemwiki.com/index.php?title=Openai/691c64c3-536c-8008-a507-c542c3a174f3&veaction=edit§ion=12 "Edit section: 5. Summary: what to actually do") | [edit source](https://freemwiki.com/index.php?title=Openai/691c64c3-536c-8008-a507-c542c3a174f3&action=edit§ion=12 "Edit section's source code: 5. Summary: what to actually do")] If you just want to free some space and wear on the internal SSD: * Put standalone non-App-Store apps in ExternalSSD/Applications. * Move big libraries (Photos, Music, game libraries) to the SSD using each app’s settings. * Leave macOS itself + App Store apps on the internal, unless you’re okay booting from the external disk. If you tell me which specific apps you care about (e.g. Xcode, Steam, big games, etc.), I can give you a per-app recipe for using the external SSD as much as possible. ## References[[edit](https://freemwiki.com/index.php?title=Openai/691c64c3-536c-8008-a507-c542c3a174f3&veaction=edit§ion=13 "Edit section: References") | [edit source](https://freemwiki.com/index.php?title=Openai/691c64c3-536c-8008-a507-c542c3a174f3&action=edit§ion=13 "Edit section's source code: References")] 1. [↑](https://freemwiki.com/wiki/Openai/691c64c3-536c-8008-a507-c542c3a174f3#cite_ref-1 "Jump up")["Install macOS apps externally"](https://chatgpt.com/share/691c64c3-536c-8008-a507-c542c3a174f3). ChatGPT. Retrieved 2025-11-19.