• Macos Catalina Public Beta Download
• Mac Os X Public Beta Download

If you install macOS on an additional volume of your startup disk, you can switch between that macOS and the macOS on your other volume, as if each were on a separate disk. And because storage space is shared across APFS volumes, you don't need to reserve space for the new volume. Its size automatically adjusts to fit your content.

What you need

Your Mac must already be using macOS High Sierra or later on an APFS-formatted startup disk. Find out which format your startup disk is using.

You don't need to reserve storage space for the new volume, but macOS needs as much as 20GB of available space to install, depending on the version of macOS. If you don't have enough space, the installer will let you know.

The public beta is a pre-release version of the next Apple Watch operating system, which will be officially released this fall. The public beta gives users who are willing to try out beta software.

About This Mac includes a storage overview: Choose Apple () menu > About This Mac, then click Storage.

Back up your Mac

It's a good idea to back up your Mac first, especially if you're installing a beta version of macOS. Beta software is software that is still in development, so some apps and services might not work as expected.

Add an APFS volume

1. Open Disk Utility, which is in the Utilities folder of your Applications folder.
2. In the sidebar, select your existing APFS volume.
3. Choose Edit > Add APFS Volume from the menu bar, or click in the Disk Utility toolbar. These options are available only when an APFS volume is selected.
4. Type any name for the new APFS volume, then click Add:
   
5. Disk Utility should now show the new volume in the sidebar. The new volume will also appear in the Finder, as if it were a separate disk. You can now quit Disk Utility.

Macos Catalina Public Beta Download

Install macOS on the volume

Choose an installation method:

• To install a beta (prerelease) version of macOS, enroll in the Apple Beta Software Program and follow the installation instructions on the program website.
• To install a release version of macOS, you can use macOS Recovery. The keys you press at startup determine which macOS is installed.

When the installer opens and you're asked to choose where to install, click Show All Disks, then select the new volume.

Switch between macOS versions

After installation is complete, you can use Startup Disk preferences or Startup Manager to quickly switch between each macOS:

• Choose Apple () menu > Startup Disk, then click and enter your administrator password. Select the volume that you want to use, then click Restart.
• Or press and hold the Option key during startup. When prompted, choose the volume that you want to start up from.

Keep the macOS on each volume up to date

To find the latest updates for each version of macOS, check for software updates, then start up from the other volume and check for software updates again.

Learn more

If your Mac is using macOS Sierra or earlier, or the startup disk is formatted as Mac OS Extended instead of APFS, you can create a new partition instead. The space it occupies doesn't automatically adjust to fit your content, so you must manually size the partition. Learn how to add a volume to a device formatted as Mac OS Extended.

Beta versions of iOS, macOS, tvOS, and watchOS are available to members of the Apple Developer Program. Members can develop apps that take advantage of the latest features of Apple platforms and test existing apps for compatibility.

Overview

Beta software, including previews and seeds, refers to a version of software that is still under development and is not yet released to the public. This software is intended only for installation on development devices registered under your Apple Developer Program membership. Registered development devices can be upgraded to future beta releases and the public version of the software. Attempting to install beta software in an unauthorized manner violates Apple policy and could render your device unusable and necessitate an out of warranty repair. Make sure to back up your devices before installing beta software and install only on devices and systems that you are prepared to erase if necessary.

iOS Beta Software

Installing iOS 13 requires Xcode 11 beta already installed or macOS 10.15 beta already installed.

Installing iOS 12 via iTunes requires Xcode 10 beta already installed. iOS 12 beta supports iPhone 5s or later, iPod touch (6th generation), iPad mini 2, and iPad Air or later.

Installation Using the Configuration Profile

1. Download the configuration profile from the download page.

   On your iOS device: Download the configuration profile directly onto your iOS device and follow the installation instructions.

   On your Mac or PC: Save the file to your hard disk and email it to an account on your iPhone. Tap the configuration profile in Mail and follow the installation instructions.

2. Connect your device to a power cord and connect to Wi-Fi.
3. Tap Settings > General > Software Update.
4. Tap Download and Install.
5. To update now, tap Install. Or tap Later and choose Install Tonight or Remind Me Later. If you tap Install Tonight, connect your device to a power cord at night and your device will update automatically by morning.
6. If prompted, enter your passcode.

Installation Using the Restore Image

1. Download the iOS beta software restore image for your device from the download page.
2. Make sure you are running the latest version of iTunes on your Mac.
3. Open iTunes on your Mac.
4. Connect your iOS device to your computer with the cable that came with your device.
5. If you’re prompted for your device passcode or to Trust This Computer, follow the onscreen steps. If you forget your passcode, help is available.
6. Select your iOS device when it appears in iTunes.
7. In the Summary panel, hold the Option key and click the Check for Update button.
8. Select the iOS beta software restore image and click Open to start the installation.
9. After installing the beta, your device will reboot and will require a network connection to complete activation.

macOS Beta Software

The macOS Developer Beta Access Utility requires macOS 10.8 or later.

1. Download the macOS Developer Beta Access Utility from the download page.
2. Open the macOS Developer Beta Access Utility and follow the instructions.
3. Once installation is complete, you’ll be presented with the macOS beta in the Mac App Store. Click the Download button to install the beta.
4. When a new macOS beta becomes available, you will receive a notification and can install it in the Software Update section of System Preferences.

tvOS Beta Software

tvOS 12 beta supports Apple TV 4K and Apple TV (4th generation) only. Apple TV Software 7.3 beta supports Apple TV (3rd generation) only.

Installation Using the Configuration Profile

1. Download the tvOS beta software configuration profile for the new Apple TV from the download page on your Mac.
2. Make sure you are running the latest version of Xcode 10 or later on your Mac as well as macOS 10.13.4 or later.
3. Check that your Apple TV is plugged in and turned on.
4. Connect your Apple TV and Mac to the same network.
5. In Xcode, choose Window > Devices and Simulators, then in the window that appears, click Devices.
6. On Apple TV, open Settings, then choose Remotes and Devices > Remote App and Devices. Apple TV searches for possible pairing devices.
7. In Xcode, select your Apple TV in the left column under Discovered. The status of the Apple TV connection request appears in the detail area.
8. Enter the verification code displayed on Apple TV and click Connect. Xcode pairs with Apple TV and a network icon appears next to your Apple TV in the left column.
9. Make sure your Mac is running the latest version of Apple Configurator.
10. Open Apple Configurator.
11. To set up an Apple TV for the first time, click Prepare and follow the onscreen instructions. To add profiles for an Apple TV that you’ve previously set up, click Add, then select Profiles. You can also drag a profile from the Finder and drop it on the icon of your Apple TV.

Installation Using the Restore Image for Apple TV (4th generation) Only

1. Download the tvOS beta software restore image for Apple TV (4th generation) from download page on your Mac.
2. Make sure you are running the latest version of iTunes on your Mac.
3. Open iTunes.
4. Connect your Apple TV (4th generation) to your Mac with a USB-C cable.
5. Select your Apple TV when it appears in iTunes.
6. In the Summary panel, hold the Option key and click the Restore Apple TV button.
7. Select the tvOS beta software restore image and click Open to start installation.
8. After installing the beta, your device will reboot and will require a network connection to complete activation.
9. NOTE: If iTunes does not recognize your Apple TV, place Apple TV in recovery mode:
   1. Make sure Apple TV is connected to your Mac.
   2. Using the included remote, press and hold MENU + Play/Pause for 6 seconds until the indicator light flashes rapidly.
   3. Proceed with step 6 to restore Apple TV.

Installation Using the Restore Image for Apple TV (3rd generation) Only

1. Identify your Apple TV model. You can find it in Settings > General > About.
2. Download the corresponding Apple TV beta software restore image from the download page to your computer.
3. Make sure you are running the latest version of iTunes.
4. Open iTunes.
5. Connect your Apple TV to your computer with a Micro-USB cable. Ensure your Apple TV is also plugged into power. NOTE: An HDMI connection is not required for the install process.
6. Select your Apple TV when it appears in iTunes.
7. In the Summary panel, hold the Option key and click the Restore Apple TV button.
8. Select the Apple TV beta software restore image and click Open to start installation. While your Apple TV is restoring, don’t unplug anything. The time it takes to restore your Apple TV depends on the speed of your Internet connection.
9. When your Apple TV has finished restoring, disconnect the Micro-USB connection from your computer, then disconnect and reconnect the power cord to restart your Apple TV.

watchOS Beta Software

watchOS 5 beta requires Apple Watch Series 2 or later and iPhone 5s or later running iOS 12 beta.

1. To update the software on Apple Watch, you’ll need to:
   • Make sure your Apple Watch has at least a 50 percent charge.
   • Connect your iPhone to Wi-Fi.
   • Keep your iPhone next to your Apple Watch to make sure they’re in range.
   • Make sure your iPhone is running iOS 12 beta.
2. Download the configuration profile from the download page.

   On your iOS device: Download the configuration profile directly on your iOS device and follow the installation instructions.

   On your Mac or PC: Save the file to your hard disk and email it to an account on your iPhone. Tap the configuration profile in Mail and follow the installation instructions.

3. After launching the profile, tap Apple Watch as the installation location and reboot when prompted.
4. On your iPhone, open the Apple Watch app and tap My Watch > General > Software Update.
5. If prompted for your iPhone passcode or Apple Watch passcode, enter the passcode.
6. Wait for the Apple logo and progress bar to appear. When the update is done, your Apple Watch will restart.

Support for Apple Watch

If your Apple Watch displays a red “!” icon, force restart your Apple Watch. Simultaneously press and hold the side button and Digital Crown for at least 10 seconds, then release when you see the Apple logo.

If force restarting your Apple Watch doesn’t resolve the issue, or if your Apple Watch restarts in recovery mode or exhibits other issues that require it to be restored with the current version of watchOS, you may need to send it in to Apple to be serviced. Apple Authorized Service Providers and Apple retail stores cannot perform this service. Once your device is received, it may take up to 3 business days to be serviced. You will get back the same device you sent in. This service is currently available in Australia, Canada, France, Germany, Italy, Japan, Switzerland, the United Kingdom, and the United States.

Mac Os X Public Beta Download

To get started, contact us.

Providing Feedback

Feedback Assistant

If you encounter any problems with beta software or if you would like to request enhancements to frameworks or API, please submit a report through Feedback Assistant. Make sure to include the build number in the bug title and description so your issue can be processed quickly.

Apple Beta Software Program

The iOS and macOS public betas available through the Apple Beta Software Program come with the built-in Feedback Assistant app. If you’re running the tvOS public beta, you can submit feedback through the Feedback Assistant app on an enrolled iOS device. When you experience an issue or something does not work as expected, send your feedback directly to Apple with Feedback Assistant.

Developer Forums

You can also find information or post about issues you encounter with your app’s code on the Apple Developer Forums.