how to reinstall macos high sierra from usb

Under Format select Mac OS X Extended (Journaled)Ħ. Select your USB Flash Drive in the left pane and click on Erase button, at top.ĥ. The Disk Utility is located at / Applications/Utilities/Disk UtilityĢ. Insert your USB Flash Drive and open Disk Utility. Follow the steps below to create the installation media.ġ. The next step is to create a bootable installation drive. Once the download is complete, it will appear in your Applications folder named as Install macOS High Sierra.Ĭreating a Bootable USB Flash Drive with Createinstallmedia Find macOS High Sierra and start downloading macOS High Sierra.Log in into App Store with your Apple ID.Here are the steps to download the copy of macOS High Sierra Download the copy of macOS from Mac App Store using your Apple ID on any Mac or functional computer running OS X 10.7.5 or later. The copy of macOS is available for free to download for anyone who has purchased Mac OS X Snow Leopard, Lion, or Mountain Lion or has a Mac with OS X Mavericks or greater. The very first step is to download macOS High Sierra. If you need to start from scratch, you can follow the guide here. This requirement is must as you need to access to Mac App Store in order to download a copy of macOS and create a installation USB Flash Drive later on. To start with the guide, you'll also need to have access to fully functional computer running Mac OS X 10.7.5 or greater. In case something goes wrong, you can restore it using the backup you created. We advise you to perform a complete backup of your system along with the existing installation. A other USB Flash Drive of any size for the Post install.The required tools and downloads are available at the forum.īefore you start with this guide, here's are few requirements The post-installation has been covered in another section. The following guide is a complete installation guide for installing a fresh copy of macOS High Sierra.

How to reinstall macos high sierra from usb