1. Mac Os Mojave
2. Mac Os Versions

Start up from macOS Recovery

Determine whether you're using a Mac with Apple silicon, then follow the appropriate steps:

Apple silicon

Turn on your Mac and continue to press and hold the power button until you see the startup options window. Click the gear icon labeled Options, then click Continue.

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Intel processor

Make sure that your Mac has a connection to the internet. Then turn on your Mac and immediately press and hold Command (⌘)-R until you see an Apple logo or other image.

If you're asked to select a user you know the password for, select the user, click Next, then enter their administrator password.

Reinstall macOS

Select Reinstall macOS from the utilities window in macOS Recovery, then click Continue and follow the onscreen instructions.

Follow these guidelines during installation:

• If the installer asks to unlock your disk, enter the password you use to log in to your Mac.
• If the installer doesn't see your disk, or it says that it can't install on your computer or volume, you might need to erase your disk first.
• If the installer offers you the choice between installing on Macintosh HD or Macintosh HD - Data, choose Macintosh HD.
• Allow installation to complete without putting your Mac to sleep or closing its lid. Your Mac might restart and show a progress bar several times, and the screen might be empty for minutes at a time.

After installation is complete, your Mac might restart to a setup assistant. If you're selling, trading in, or giving away your Mac, press Command-Q to quit the assistant without completing setup. Then click Shut Down. When the new owner starts up the Mac, they can use their own information to complete setup.

Other macOS installation options

When you install macOS from Recovery, you get the current version of the most recently installed macOS, with some exceptions:

• On an Intel-based Mac: If you use Shift-Option-Command-R during startup, you're offered the macOS that came with your Mac, or the closest version still available. If you use Option-Command-R during startup, in most cases you're offered the latest macOS that is compatible with your Mac. Otherwise you're offered the macOS that came with your Mac, or the closest version still available.
• If the Mac logic board was just replaced, you may be offered only the latest macOS that is compatible with your Mac. If you just erased your entire startup disk, you may be offered only the macOS that came with your Mac, or the closest version still available.

You can also use these methods to install macOS, if the macOS is compatible with your Mac:

• Use the App Store to download and install the latest macOS.
• Use the App Store or a web browser to download and install an earlier macOS.
• Use a USB flash drive or other secondary volume to create a bootable installer.

The Find My app combines Find My iPhone and Find My Friends into a single app for iOS 13, iPadOS, and macOS Catalina. If you need help finding it, use Search on your iPhone, iPad, or iPod touch, or use Spotlight on your Mac. You can also share locations or find missing devices on iCloud.com.

If you don't have iOS 13, iPadOS, macOS Catalina, or watchOS 6, set up and use Find My iPhone and Find My Friends instead of Find My, or log in to iCloud.com.

With Find My, you can locate and protect your Mac if it's ever lost or stolen. You need to set up Find My Mac before it goes missing. To turn it on, simply choose Apple menu  > System Preferences, click Apple ID, then click iCloud. If you believe that your Mac was stolen, contact your local law enforcement.

Use Find My to locate your computer

If you set up Find My Mac before your Mac was lost or stolen, you can use it to locate your Mac on a map, or play a sound to help you find it. You can also use it to remotely lock or erase your Mac. To use Find My, sign in to iCloud.com on another computer or open the Find My app for iPhone, iPad, or iPod touch.

Mac Os Mojave

Locate your Mac on a map

Open the Find My app and select your Mac from the list of devices to view its location on a map and get directions.

Play a sound

If your Mac is nearby, you can have it play a sound to help you or someone nearby find it.

Lock your Mac

You can use Find My to mark your computer as lost, which remotely locks it with a passcode. You can also display a custom message on its screen.

Erase your Mac

You can use Find My to remotely erase all your personal information from your Mac.

What if my Mac is shut down or offline?

If your Mac is turned off or offline, you can still use Find My to request a notification when it’s located, or lock or erase it remotely. The next time your Mac is online, the actions take effect. If you remove your Mac from Find My when it's offline, your requests are canceled.

How do I unlock my Mac?

After you locate your Mac, you can unlock it with your passcode on iCloud.com. Make sure to use the passcode that you created when you locked it with Find My, not your device passcode.

Here's how to see the passcode that you used to lock your Mac:

1. Sign in to icloud.com/find.
2. Select your Mac from the Devices menu.
3. Select Unlock. After you follow the steps to verify your identity, you'll see the passcode that you need to unlock your Mac.

Mac Os Versions

You can look up your passcode for a limited time. If you forget your passcode or can't verify your identity to see it, take your Mac to an Apple Authorized Service Provider along with your proof of purchase.

If you can't find your Mac

Find My Mac is the only Apple service that can help track or locate a lost Mac. If you didn’t set up Find My Mac before your Mac was lost, or you can’t locate it, these steps might help you protect your data:

1. Change your Apple ID password to prevent anyone from accessing your iCloud data or using other services (such as iMessage or iTunes) from your Mac.
2. Change your passwords for other accounts you use with your Mac, including email, banking, and social sites like Facebook or Twitter.
3. Report your lost or stolen Mac to local law enforcement. They might request the serial number of your computer. You can find this information on the original box or receipt you received when you purchased your Mac.