Making a USB install drive requires the usage of precise syntax at the command line with superuser privileges, using the wrong syntax could lead to unintended data loss. The complete macOS High Sierra installer application downloaded from the Mac App Store(some users end up with an incomplete installer sized at 19MB, you can follow instructions here to get the entire 5GB macOS 10.13 installer if necessary)īeyond that you’ll just need a bit of patience and a bit of technical know-how or comfort following technical instructions.
A blank USB flash drive (16GB or larger is recommended) you don’t mind formatting, this will become the boot installer drive for macOS High Sierra.To create a functioning macOS High Sierra installer boot drive, you will need the following: Requirements to Create a macOS High Sierra Bootable USB Installer This walkthrough will detail how to make a bootable USB install drive for macOS High Sierra.
