To check the problem your Mac has, click the Verify Disk. When the new owner starts up the Mac, they can use their own information to complete the setup process. Click Disk Utility and choose the drive you want to repair on your Mac. If you’re selling, trading in or giving away your Mac, press Command-Q to exit the setup assistant without completing the setup process, then click Shut Down. Clone the Recovery HD Disk Image to the Partition Hiding the Recovery HD Volume Ever since OS X Lion, the installation of the Mac operating system has included the creation of a Recovery HD volume, which is hidden away on Mac's startup drive. When the installation is complete, your Mac may restart to a setup assistant. The Apple download contains a recovery image called BaseSystem.dmg which needs to be copied to a correctly partitions and formatted recovery USB or ISO. Your Mac may restart and show a progress bar several times, and the screen may be empty for minutes at a time. 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.in the bottom-left corner of the window, underneath the message This Mac is enrolled in the Apple Beta Software Program. If the installer can't see your disk, or it says that it can't install on your computer or volume, you may need to erase your disk first. Go to System Preferences > Software Update.If the installer asks to unlock your disk, enter the password that you use to log in to your Mac.Click Continue, then follow the onscreen instructions.Reinstalling macOS won’t remove your personal data. Navigate to Contents/SharedSupport and look for a file called InstallESD.dmg. Right-click on the installer and hit Show Package Contents. The installer should show up in your Applications folder. I am no longer maintaining this project because of slow upload speeds and being unable to test the older ISOs I uploaded. Some of these versions do not work, the reviews seem to have a general idea of which ones don't work. When the new owner starts up the Mac, they can use their own information to complete setup.When you see a window with the option to reinstall macOS, this means your Mac has started up from Recovery. 8 Answers Sorted by: 6 Create a bootable OS X Lion USB stick or DVD based on the Mac App Store download Buy and download Lion from the Mac App Store. apple Language English This is a collection of macOS's I have collected. If you're selling, trading in, or giving away your Mac, press Command-Q to quit the setup assistant without completing setup, then click Shut Down. 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. If the installer offers you the choice between installing on Macintosh HD or Macintosh HD - Data, choose Macintosh HD. If you dont have a Recovery partition, then you can always install macOS via its Internet Recovery feature.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. Your Mac is failing to boot up properly due to some unknown glitch, so there’s no way to access the operating system or even get your data off the hard drive.Continue holding until you see the Apple logo or a spinning globe. If the installer asks to unlock your disk, enter the password that you use to log in to your Mac. To use macOS Recovery, turn on your Mac and immediately press and hold Command ()-R. When you see a window with the option to reinstall macOS, your Mac has started up from Recovery. It boots up Mac from the Recovery HD partition which contains a recovery image and a copy of the macOS installer.
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