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macOS Big Sur elevates the most advanced desktop operating system in the world to a new level of power and beauty. Experience Mac to the fullest with a refined new design. Enjoy the biggest Safari update ever. Discover new features for Maps and Messages. And get even more transparency around your privacy.

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macOS Big Sur is compatible with these computers:

MacBook introduced in 2015 or later
MacBook Air introduced in 2013 or later
MacBook Pro introduced in late 2013 or later
Mac mini introduced in 2014 or later
iMac introduced in 2014 or later
iMac Pro
Mac Pro introduced in 2013 or later
View the complete list of compatible computers.

If upgrading from macOS Sierra or later, macOS Big Sur requires 35.5 GB of available storage to upgrade. If upgrading from an earlier release, macOS Big Sur requires up to 44.5 GB of available storage. To upgrade from OS X Mountain Lion, first upgrade to OS X El Capitan, then upgrade to macOS Big Sur.

Make a backup

Before installing an upgrade, it’s a good idea to back up your Mac. Time Machine makes it simple, and other backup methods are also available. Find out how to back up your Mac.

Get connected

It takes time to download and install macOS, so make sure you have a reliable Internet connection. If you’re using a Mac notebook computer, plug it into AC power.

Download macOS Big Sur

If you're using macOS Mojave or later, get macOS Big Sur via Software Update: choose Apple menu  > System Preferences, then click Software Update.

Or use this link to open the macOS Big Sur page on the App Store: get macOS Big Sur. 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 the installation to finish

Please allow the installation to finish 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 Big Sur, you will be notified when updates to macOS Big Sur are available. You can also use Software Update to check for updates: Choose Apple menu  > System Preferences, then click Software Update.

Or get macOS Big Sur 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 Big Sur will be downloaded conveniently in the background, making it even easier to upgrade. A notification will inform you when macOS Big Sur 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 Big Sur from your Applications folder.

Learn more

  • If the installer shows a list of apps that are not optimised for your Mac, find out more about 32-bit app compatibility, then choose whether to proceed with the installation.
  • For the strongest security and latest features, upgrade to macOS Big Sur. If you have hardware or software that isn't compatible with Big Sur, you might be able to install an earlier macOS.
  • You can also use macOS Recovery to reinstall the macOS you're using now, upgrade to the latest compatible macOS, or install the macOS that came with your Mac.

This guide describes how to download, install and encrypt the Dash Corewallet for macOS. The guide is written for macOS Sierra, but the stepsshould be similar for other versions.

Downloading the Dash Core wallet¶

Visit https://www.dash.org/downloads/ to download the latest Dash Corewallet. In most cases, the website will properly detect which versionyou need. Click Download Installer to download the installerdirectly.

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The website properly detects the wallet appropriate for your system

Private

If detection does not work, you will need to manually choose youroperating system. Go to https://www.dash.org/downloads/ and select themacOS tab, then click Download Installer. Save the file youdownloaded to your Downloads folder.

Verifying Dash Core¶

This step is optional, but recommended to verify the authenticity of thefile you downloaded. This is done by checking its detached signatureagainst the public key published by the Dash Core development team. Todownload the detached signature, click the Installer Signaturebutton on the wallet download page and save it to the same folder as thedownloaded binary.

All releases of Dash are signed using GPG with one of the following keys:

  • Alexander Block (codablock) with the key 63A96B406102E091,verifiable here on Keybase

  • Pasta (pasta) with the key 52527BEDABE87984, verifiable hereon Keybase

Open a terminal, import the keys and verify the authenticity of yourdownload as follows:

Downloading the PGP key and verifying the signed binary

If you see the message Goodsignaturefrom... then you have anauthentic copy of Dash Core for macOS.

Installing Dash Core¶

Open Finder and browse to your Downloads folder. Then double-click onthe .dmg file you downloaded to decompress it. A window appears showingthe contents of the file.

Drag the Dash Core application file into your Applications folder toinstall Dash Core.

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Installing Dash Core

Running Dash Core for the first time¶

To run Dash Core for the first time, either open Launchpad or browse toyour Applications folder in Finder. Double-click Dash Core orDash-Qt to start the application. You may see a warning aboutopening an app from an unidentified developer. To resolve this problem,simply Control-click the app icon and choose Open from the shortcutmenu, then click Open again in the dialog box. The app is saved asan exception to your security settings, and you can open it in thefuture by double-clicking it just as you can any registered app.

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The first time the program is launched, you will be offered a choice ofwhere you want to store your blockchain and wallet data. Choose alocation with enough free space, as the blockchain can reach 30GB+ insize. It is recommended to use the default data folder if possible.

Choosing the Dash Core data folder

Dash Core will then start up. This will take a little longer than usualthe first time you run it, since Dash Core needs to generatecryptographic data to secure your wallet.

Synchronizing Dash Core to the Dash network¶

Once Dash Core is successfully installed and started, you will see thewallet overview screen. You will notice that the wallet is “out ofsync”, and the status bar at the bottom of the window will show thesynchronization progress.

Dash Core begins synchronizing with the Dash network

During this process, Dash Core will download a full copy of the Dashblockchain from other nodes to your device. Depending on your internetconnection, this may take a long time. If you see the message “No blocksource available”, check your internet connection. When synchronizationis complete, you will see a small blue tick in the lower right corner.

You can now begin to use your wallet to send and receive funds.

Encrypting your Dash wallet¶

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After your wallet has synchronized with the Dash network, it is stronglyadvised to encrypt the wallet with a password or passphrase to preventunauthorized access. You should use a strong, new password that you havenever used somewhere else. Take note of your password and store itsomewhere safe or you will be locked out of your wallet and lose accessto your funds.

To encrypt your wallet, click Settings > Encrypt Wallet.

You will be asked to enter and verify a password.

Enter a password

When the encryption process is complete, you will see a warning thatpast backups of your wallet will no longer be usable, and be asked toshut down Dash Core. When you restart Dash Core, you will see a smallblue lock in the lower right corner.

Fully encrypted and synchronized Dash Core wallet

You can now begin to use your wallet to safely send and receive funds.