Oct 12, 2019 In Terminal you can hide the update so it doesn't show in Software Update. This way you do not install it by error, or overlook other updates for Mojave. May 22, 2020 Tap General Software Update. Tap Install if a software update is available, then follow the onscreen instructions. Leave your Apple Watch on its charger while the update completes. Don't restart your iPhone or Apple Watch, and don't quit the Apple Watch app. When the update completes, your Apple Watch will restart on its own. Oct 29, 2016 Restarted my mac, during the restart it said that it was installing/updating software (but didn't say what). After it updated I tried to log in and I kept getting these keychain messages that would not take my password, new or old, and wouldn't let me log in. Tried a couple times, hard restarting the computer, same messages.
macOS Catalina gives you more of everything you love about Mac. Experience music, TV, and podcasts in three all-new Mac apps. Enjoy your favorite iPad apps now on your Mac. Extend your workspace and expand your creativity with iPad and Apple Pencil. And discover smart new features in the apps you use every day. Now you can take everything you do above and beyond.
Check compatibility
If you're using one of these computers with OS X Mavericks or later,* you can install macOS Catalina. Your Mac also needs at least 4GB of memory and 12.5GB of available storage space, or up to 18.5GB of storage space when upgrading from OS X Yosemite or earlier.
MacBook introduced in 2015 or later
MacBook Air introduced in 2012 or later
MacBook Pro introduced in 2012 or later
Mac mini introduced in 2012 or later
iMac introduced in 2012 or later
iMac Pro (all models)
Mac Pro introduced in 2013 or later
* To upgrade from Lion or Mountain Lion, first upgrade to El Capitan, then upgrade to Catalina. To find your macOS version, Mac model, memory, and storage space, choose About This Mac from the Apple menu . If your Mac isn't compatible with macOS Catalina, the installer will let you know. View the complete list of compatible computers.
Make a backup
Before installing any upgrade, it’s a good idea to back up your Mac. Time Machine makes it simple, and other backup methods are also available. Learn how to back up your Mac.
Get connected
It takes time to download and install macOS, so make sure that you have a reliable Internet connection. If you're using a Mac notebook computer, plug it into AC power.
Download macOS Catalina
If you're using macOS Mojave, get macOS Catalina via Software Update: Choose Apple menu > System Preferences, then click Software Update.
Or use this link to open the macOS Catalina page on the App Store: Get macOS Catalina. Then click the Get button or iCloud download icon.
Begin installation
After downloading, the installer opens automatically.
Click Continue and follow the onscreen instructions. You might find it easiest to begin installation in the evening so that it can complete overnight, if needed.
If the installer asks for permission to install a helper tool, enter the administrator name and password that you use to log in to your Mac, then click Add Helper.
Allow installation to complete
Please allow installation to complete without putting your Mac to sleep or closing its lid. Your Mac might restart, show a progress bar, or show a blank screen several times as it installs both macOS and related updates to your Mac firmware.
Stay up to date
After installing macOS Catalina, you will be notified when updates to macOS Catalina are available. You can also use Software Update to check for updates: Choose Apple menu > System Preferences, then click Software Update.
Or get macOS Catalina automatically
If you're using OS X El Capitan v10.11.5 or later and your App Store preferences or Software Update preferences are set to download new updates when available, macOS Catalina will download conveniently in the background, making it even easier to upgrade. A notification will inform you when macOS Catalina is ready to be installed. Click Install to get started, or dismiss the notification to install later. When you're ready to install, just open the file named Install macOS Catalina from your Applications folder.
Learn more
- If the installer shows a list of apps that are not optimized for your Mac, learn about 32-bit app compatibility, then choose whether to proceed with the installation.
- For the strongest security and latest features, upgrade to macOS Catalina. If you have hardware or software that isn't compatible with Catalina, you might be able to install an earlier macOS, such as Mojave, High Sierra, Sierra, or El Capitan.
- You can also use macOS Recovery to reinstall macOS.
Check compatibility with watchOS 6
watchOS 6 is compatible with Apple Watch Series 1 and later. Upgrading to watchOS 6 requires an iPhone 6s or later running iOS 13 or later. Find your Apple Watch model.
Before you begin
- Update your iPhone to the latest version of iOS.
- Make sure that your Apple Watch is at least 50 percent charged.
- Connect your iPhone to Wi-Fi.
- Keep your iPhone next to your Apple Watch, so that they're in range.

It could take from several minutes to an hour for the update to complete. You might want to update overnight or wait until you have time.
Update your Apple Watch using your iPhone
When a new update is available, your Apple Watch notifies you. Tap Update Tonight in the notification, then go to your iPhone to confirm that you want to update overnight. At the end of the day, leave your Apple Watch and iPhone charging overnight so the update can complete.
To check for updates manually, use these steps:
- Keep your Apple Watch on its charger until the update completes.
- On your iPhone, open the Apple Watch app, then tap the My Watch tab.
- Tap General > Software Update.
- Download the update. If asked for your iPhone passcode or Apple Watch passcode, enter it.
- Wait for the progress wheel to appear on your Apple Watch. It could take from several minutes to an hour for the update to complete.
Leave your Apple Watch on its charger while the update completes. Don't restart your iPhone or Apple Watch, and don't quit the Apple Watch app. When the update completes, your Apple Watch will restart on its own.

Update directly on your Apple Watch
If you've upgraded your Apple Watch to watchOS 6, you can install subsequent updates without your iPhone:
- Make sure that your watch is connected to Wi-Fi.
- On your watch, open the Settings app.
- Tap General > Software Update.
- Tap Install if a software update is available, then follow the onscreen instructions.
Leave your Apple Watch on its charger while the update completes. Don't restart your iPhone or Apple Watch, and don't quit the Apple Watch app. When the update completes, your Apple Watch will restart on its own.
If you need help updating
Try these steps:
- Make sure that your Apple Watch connects to its charger.
- Restart your Apple Watch. Press and hold the side button until you see Power Off, then drag the slider. To turn your watch on again, press and hold the side button.
- Restart your paired iPhone.
- Try to start the update again.
Mac Won't Install Software Update
If the update won't start, open the Apple Watch app on your iPhone, tap General > Usage > Software Update, then delete the update file. After you delete the file, try to download and install watchOS again.
If you installed an iOS or watchOS beta or developer seed
- Before you update, remove the beta profile from your device. To view and remove profiles:
- Open the Apple Watch app on your iPhone, tap the My Watch tab, then go to General > Profiles. Tap the beta profile that you want to remove, then tap Delete Profile. Enter your iPhone passcode if requested.
- Open the Settings app on your iPhone, then tap General > Profiles & Device Management. Tap the beta profile that you want to remove, then tap Delete profile. Enter your iPhone passcode if requested.
- After you remove the profiles, restart both devices and check for the update again.
Why Won T My Mac Update
To continue using the public beta of iOS, you can install the beta profile again.