- How to do a clean install mac os x lion mac os x#
- How to do a clean install mac os x lion upgrade#
- How to do a clean install mac os x lion password#
- How to do a clean install mac os x lion download#
After that, click on the gear icon labelled "Options".
How to do a clean install mac os x lion mac os x#
On an Apple silicon Mac, you can also turn on your Mac and continue to hold the power button until you see the startup options screen. How To: Install a new font on an Apple Mac OS X computer How To: Install Mac OS X on a Compaq Presario C717nr laptop How To: Do a full fresh install of Snow Leopard OS X 10. Use this key combination to erase your drive before giving it to someone else. If you've never installed 10.12.14 (Sierra), using ⌘ Cmd+ R will install the OS without tying it to your Apple ID. If you didn't have 10.12.14, Sierra, this key combination will not work. 
On an Intel-based Mac, to install the macOS your Mac came with, no matter how out-dated, press ⇧ Shift+ ⌥ Opt+ ⌘ Cmd+ R. For example, a Mac from early 2012 will not be compatible with macOS 10.15, Catalina. 
How to do a clean install mac os x lion upgrade#
To upgrade your macOS to the most current OS that is compatible with your Mac, press ⌥ Opt+ ⌘ Cmd+ R.If you're hoping for a different version, check out these alternatives: This key combination tells your Mac to reinstall the same version of macOS that was already installed.
Use a USB flash drive or other secondary volume to create a bootable installer.Press and hold ⌘ Cmd+ R right after you press the power button. How to do a clean install mac os x lion download#
Use the App Store to download and install the latest macOS or an earlier macOS. You can also use these methods to install macOS, if the macOS is compatible with your Mac: If you just erased your entire startup disk, you might be offered only the macOS that came with your Mac, or the closest version still available. If the Mac logic board was just replaced, you might be offered only the latest macOS that is compatible with your Mac. It will show as Installed, even if you hold the Option key while clicking the Purchases icon/tab in the Mac App Store app as outlined by the instructions. Or you can use Option-Command-R during startup to be offered either the latest macOS that is compatible with your Mac, or in some cases the macOS that came with your Mac or the closest version still available. Just as an FYI, I noticed that, once you re-download Lion once, you cannot download it again even if you delete the Install Mac OS X Lion app from the Applications folder. On an Intel-based Mac, you can use Shift-Option-Command-R during startup to be offered the macOS that came with your Mac, or the closest version still available. When you install macOS from Recovery, you get the current version of the most recently installed macOS, with some exceptions: 
When the new owner starts up the Mac, they can use their own information to complete setup. If you're selling, trading in, or giving away your Mac, press Command-Q to quit the assistant without completing setup. Your Mac might restart and show a progress bar several times, and the screen might be empty for minutes at a time.Īfter installation is complete, your Mac might restart to a setup assistant.
Allow installation to complete without putting your Mac to sleep or closing its lid. If the installer offers you the choice between installing on Macintosh HD or Macintosh HD - Data, choose Macintosh HD. 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. How to do a clean install mac os x lion password#
If the installer asks to unlock your disk, enter the password you use to log in to your Mac.To begin installation, select Reinstall macOS from the utilities window in macOS Recovery, then click Continue and follow the onscreen instructions.įollow these guidelines during installation: Reinstalling macOS does not remove data from your Mac.
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