Reinstall macOS: this feature allows you to reinstall your macOS when the system encounters issues and can’t boot.You need to connect the backup drive to your Mac in advance. Restore From Time Machine Backup: if you have backed up your Mac computer using Time Machine to an external hard drive, you can use this option to restore your Mac from the backup.To be specific, there are four universal options in Mac Recovery Mode: You can boot your Mac into Recovery Mode and then solve the issue by restoring from an available Time Machine backup, reinstalling macOS, fixing the startup disk via Disk Utility, or get help from Apple’s support. Even you wipe or start your Mac computer again from scratch, the Recovery partition can still be there for you to solve some serious issues like macOS could not be installed on your computer, MacBook boot into a black screen, Mac won’t boot past the Apple logo, and so on. The Recovery partition is a magical existence. Mac Recovery Mode relies on the Recovery partition on Mac. In this mac OS version, Apple has introduced a recovery partition that contains the utilities generally found on the OS X discs.
On July 1, 2011, Apple released Mac OS X 10.7 Lion to the public.
