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Apple changed the start keys with macOS Sierra version If you have ever installed that version on your Mac, no matter what version or no version is currently installed, you have these options. Email yours to mac macworld. Amazon is selling some iPad Pro models for the lowest prices ever.
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To protect your personal data, create a backup with Time Machine or similar software. Finally, when you are ready to reinstall the operating system, click the Apple logo in the menu bar at top of the screen and select Restart or Shut Down.
Once the system starts booting and you hear the startup chime, hold down the combination of Command, Option Alt , and R. Keep holding these keys until the animated globe appears with the message below stating 'Starting Internet Recovery' and 'This may take a while'.
How to Reinstall Mac OS
Note: If you are using a Mac laptop, use the built-in keyboard to access Internet Recovery Mode, since keystrokes might not register properly on external keyboards. Next, select the Wi-Fi network. If you are not using an Ethernet network, click the drop-down menu and select the desired network. You must confirm access to a Wi-Fi network by entering the password. Then press Return on the keyboard or click the checkmark symbol on the screen to continue.
After successful authentication to achieve the network connection, the Mac will begin to download a recovery system image from Apple's servers.
How To Hard Reset a Mac OS X Computer & Reinstall The OS
You will see a progress bar monitoring the status of the download. Depending on your internet connection, this process may take some time. Ensure that the computer is connected to the power adapter. From this point, the process will be similar to the reinstallation via recovery partition.
Do You Ever Need to Reinstall macOS?
Increased attack rate of infections detected within the last 24 hours. Before you download and install the MacOS update, ensure the move to Catalina goes as smoothly as possible. Make a backup.
Before you download and install any big MacOS update, have a good, current backup of the contents of your Mac's drive , in case something goes south during the installation or afterward and you need to revert back. Know your Apple ID. If you're a Mac user, you probably have an Apple ID.
How to reinstall macOS, even without Recovery Mode
If not, get one, because you'll most likely need it during the Catalina setup process and logging into iCloud. Check your free storage space. The download is big -- around 6.
Update your apps. With Catalina, Apple is turning off support for bit apps. If not, you'll either have to find a replacement or stick with your current MacOS so you can keep using the software.