Reinstall macOS from macOS Recovery (using Wifi only)

January 4, 2019

For those who using macOS (Macbook Pro/MacBook), did you know that you guys able to reformat or perform clean installation of the operating system without using any USB installer or DVD installer.

macOS Recovery makes it easy to reinstall the Mac operating system, even if you need to erase your startup disk first. All you need is a stable and high-speed connection to the Internet. If a wireless network is available, you can choose it from the Wi-Fi menu in the menu bar.

How to do? Turn on your Mac and immediately press and hold one of the following combinations on your keyboard.

Command (⌘)-R – Install the latest macOS that was installed on your Mac.

Option-⌘-R – Upgrade to the latest macOS compatible with your Mac.

Shift-Option-⌘-R – Install the macOS that came with your Mac, or the closest version still available.