Make sure the installer is fully downloaded (about 5 GB) Good internet connection: You need to download the macOS High Sierra installer from the App Store.Blank USB drive: You need a flash drive that has at least 16 GB of available storage space to create a bootable macOS High Sierra installer.Requirements to create a macOS High Sierra bootable USB driveĬreating a bootable drive with a High Sierra installer is quite simple. Installing macOS the clean way (using a non-startup drive).Creating a bootable USB using the Terminal.Requirements to create macOS High Sierra bootable USB drive.It’s not hard at all, and in this article, we will guide you through: It makes sense to create a bootable USB flash drive to install the High Sierra operating system if you want to quickly install it on several Macs without having to download the installer each time. ![]() The app will help you delete junk, duplicates, and unnecessary apps in a couple of clicks. ![]() MacKeeper allows you to free up necessary gigabytes easily. Please note that before installing any system, you need to ensure there is sufficient space on your Mac.
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