To get the latest features and maintain the security, stability, compatibility, and performance of your Mac, it's important to keep your software up to date. Apple recommends that you always use the latest macOS that is compatible with your Mac.
Learn how to upgrade to macOS Big Sur, the latest version of macOS.
If a macOS installer can't be used on your Mac, the installer will let you know. For example, it might say that it's too old to be opened on this version of macOS, or that your Mac doesn't have enough free storage space for the installation.
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To confirm compatibility before downloading, check the minimum requirements for macOS Catalina, Mojave, High Sierra, Sierra, El Capitan, or Yosemite. You can also find compatibility information on the product-ID page for MacBook Pro, MacBook Air, MacBook, iMac, Mac mini, or Mac Pro.
Before installing, 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.
It takes time to download and install macOS, so make sure that you're plugged into AC power and have a reliable internet connection.
Safari uses these links to find the old installers in the App Store. After downloading from the App Store, the installer opens automatically.
Safari downloads the following older installers as a disk image named InstallOS.dmg or InstallMacOSX.dmg. Open the disk image, then open the .pkg installer inside the disk image. It installs an app named Install [Version Name]. Open that app from your Applications folder to begin installing the operating system.
Follow the onscreen instructions in the installer. It might be 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.
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 macOS and related firmware updates.
You might also be able to 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.
What should you do if your MacBook Air cannot recover from Recovery Mode?
Recovery is a set of tools that you can rely on in the case of an emergency. This can include a drastic situation where you cannot get into OS X. Although it looks a great deal like OS X proper, Recovery’s capabilities are confined to essential maintenance tools to help you recover from a critical issue.
However, you may find that your MacBook Air or any Mac computer stuck in Recovery Mode. Here are some expert tips and advice on what to do if Mac is stuck on Recovery Mode.
macOS Recovery belongs to the built-in recovery system of your MacBook or computer. The different utilities in macOS Recovery help you:
Pro Tip: Scan your Mac for performance issues, junk files, harmful apps, and security threats
that can cause system issues or slow performance.
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Without much difficulty, you can start up from it and use its utilities to recover from software issues or take other actions.
To use Recovery, just turn on your Mac and immediately press and hold Command + R. You may also use one of the other designated key combinations on your keyboard. Continue to hold until the Apple logo or a spinning globe appears.
Once you have started up successfully from Recovery, choose from the different utilities and then click Continue:
If you want to quit Recovery, you simply need to hit Restart or Shut Down from the Apple menu.
There are times, however, when you get stuck in Recovery Mode for an unclear reason.
Newer Macs and certain older ones automatically attempt to start up from macOS Recovery over the internet when they fail to start up from the built-in recovery system. In this instance, a spinning globe shows up instead of an Apple logo when it’s startup time.
Some MacBook and Mac users have reported that they got stuck in Recovery Mode. One was in the process of installing macOS High Sierra on his MacBook Air. Suddenly, his computer restarted and couldn’t boot up. He was then trapped on the Recovery page and couldn’t reinstall any operating system at all.
According to the system, there isn’t enough storage on his hard drive. To make matters worse, he didn’t have any Time Machine saved OS either.
The main problem here is when you are stuck, you cannot re-download an operating system. Relax, though, because we just might have an expansive list of potential solutions for you.
Before getting to work with these solutions, make sure to always clean up your Mac using a reliable Mac optimizer tool. This will help avoid junk files and other space hogs from getting in the way of your Mac’s processes and causing errors.
Try the fixes we listed below to get out of the Recovery rut:
Shut down your machine, wait 30 seconds, and then restart it. You may also start your computer in Safe Mode, and then restart normally afterwards. Note that this is slower than your standard computer startup.
Follow these steps:
If the problem stops, you might want to try migrating to the new account, transferring your files there.
Nonvolatile random access memory (NVRAM) is a small amount of memory. Macs use it to store settings and access them right away. Settings stored in NVRAM include sound volume, time zone, display resolution, and startup-disk selection.
Parameter RAM (PRAM) stores similar information. Take note that you need to follow the same steps to reset both.
Here are steps to reset your NVRAM properly:
The System Management Controller (SMC) is responsible for a number of functions on Intel-based Macs. These functions include responding to power button presses, battery management, thermal management, and ambient light sensing. They also include keyboard backlighting, battery status indicator lights, and Sudden Motion Sensor (SMS).
There are several indicators that it’s time to consider resetting the SMC. These include your Mac not responding when you press the power button. A reset is also potentially helpful in certain situations, such as when your Mac:
On a Mac notebook with a removable battery, restart the SMC with these steps:
On a MacBook with a non-removable battery:
Find other instructions for resetting the SMC here.
Here are steps you should follow:
If you find the compelling need to reinstall macOS, you may also use a bootable installer. Here, you can use an external drive or secondary volume as a startup disk from which you can install the operating system. Follow the steps straight from Apple Support.
Recovery is a set of tools that aids you through an emergency. These dire situations include a critical problem that you need to recover from. MacBooks and other Mac machines, however, can get stuck in Recovery Mode and encounter boot-up problems. Use the solutions above to find the best fix for your specific case.
Have you ever come across this fairly common issue with Recovery Mode? Let us know more about your experience!