Install older OS X onto an external drive. The following method allows you to download Mac OS X Lion, Mountain Lion, and Mavericks. Start your Mac holding down Command + R. Prepare a clean external drive (at least 10 GB of storage). Within OS X Utilities, choose Reinstall OS X. Select external drive as a source. Enter your Apple ID. Edit 2: Restarted the internet recovery and it made it through but it hangs up after starting to install OS X Lion and says 'can't download the additional components needed to install Mac OS X. Guess I'll try to create a USB start up? All you have to do to fix this problem is open System Preferences in Mac OS X, open Time Machine and switch Time Machine from On to Off. From there, try installing Mac OS Mavericks again. The Apple OS X Mavericks installation troubleshooting guide Apple AAPL introduced the Mavericks OS as a free upgrade Tuesday. 11 percent of Mac users have already installed the OS, but there.
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.
Check compatibility
If a macOS installer can't be used on your Mac, the installer will let you know. For example, it might say that your Mac doesn't have enough free storage space for the installation, or that the installer is too old to be opened on this version of macOS.
If you want to check compatibility before downloading the installer, learn about the minimum requirements for macOS Catalina, Mojave, High Sierra, Sierra, El Capitan, or Yosemite. You can also check compatible operating systems on the product-ID page for MacBook Pro, MacBook Air, MacBook, iMac, Mac mini, or Mac Pro.
Make a backup
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.
Download macOS
It takes time to download and install macOS, so make sure that you're plugged into AC power and have a reliable internet connection.
These installers from the App Store open automatically after you download them:
- macOS Catalina 10.15 can upgrade Mojave, High Sierra, Sierra, El Capitan, Yosemite, Mavericks
- macOS Mojave 10.14 can upgrade High Sierra, Sierra, El Capitan, Yosemite, Mavericks, Mountain Lion
- macOS High Sierra 10.13 can upgrade Sierra, El Capitan, Yosemite, Mavericks, Mountain Lion, Lion
Your web browser 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.
- macOS Sierra 10.12 can upgrade El Capitan, Yosemite, Mavericks, Mountain Lion, or Lion
- OS X El Capitan 10.11 can upgrade Yosemite, Mavericks, Mountain Lion, Lion, or Snow Leopard
- OS X Yosemite 10.10can upgrade Mavericks, Mountain Lion, Lion, or Snow Leopard
Install macOS
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 both macOS and related updates to your Mac firmware.
Learn more
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.
Migration Assistant copies all of your files from your old Mac to your new Mac so that you don't have to copy them manually.
- If your files are currently on a PC, follow the PC migration steps instead.
- If you're moving content from a Time Machine backup, follow the steps to restore your Mac from a backup instead.
Get ready
- Install all available software updates on both computers. If your old Mac isn't using OS X Lion or later, and your new Mac isn't using OS X Mavericks or later, follow the Mountain Lion migration steps instead.
- If both computers are using macOS Sierra or later, place them near each other with Wi-Fi turned on. If either one is using OS X El Capitan or earlier, make sure that both are on the same network.
- On your old Mac, choose Apple menu > System Preferences, then click Sharing. Make sure that a name appears in the Computer Name field.
Use Migration Assistant
You're now ready to use Migration Assistant to move your files from the old Mac to the new one.
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On your new Mac
- Open Migration Assistant, which is in the Utilities folder of your Applications folder. Then click Continue.
- When asked how you want to transfer your information, select the option to transfer from a Mac, Time Machine backup, or startup disk. Then click Continue.
On your old Mac
- Open Migration Assistant, then click Continue.
- When asked how you want to transfer your information, select the option to transfer to another Mac. Then click Continue.
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On your new Mac
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When asked to select a Mac, Time Machine backup, or other startup disk, select the other Mac. Then click Continue.
On your old Mac
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If you see a security code, make sure that it's the same code shown on your new Mac. Then click Continue.
On your new Mac
- Select the information to transfer.
In this example, John Appleseed is a macOS user account. If it has the same name as an account already on your new Mac, you're prompted to either rename the old account or replace the one on your new Mac. If you rename, the old account will appear as a separate user on your new Mac, with a separate home folder and login. If you replace, the old account will delete and then replace the account on your new Mac, including everything in its home folder. - Click Continue to start the transfer. Large transfers might need several hours to complete.
- After Migration Assistant is done, log in to the migrated account on your new Mac to see its files.
If you're not keeping your old Mac, learn what to do before you sell, give away, or trade in your old Mac.