How to create a bootable macOS High Sierra installer drive Put the macOS High Sierra installer on an external USB thumb drive or hard drive and use it to install the operating system on a Mac. I will try my best so that you understand this guide very. In the window that opens, use the + and -buttons in the lower left corner (C) to add and remove partitions. This guide is about the How to Make Bootable MacOS High Sierra 10.13 Beta Installer USB Drive. Select your drive in the sidebar (A) and click Partition (B).

Insert an 8GB (or larger) flash drive and give it a name. If your USB drive is formatted as GUID Partition Map, the Partition button should now no longer be greyed out. The DIY Option: Terminal Download the macOS Sierra installer. Part 2: Partition USB drive macOS High Sierra. Once formatted, open System Preferences, click Time Machine, click Select Disk, and choose your USB drive from the available options. Otherwise, you can format a USB drive for Time Machine by opening Disk Utility, selecting the drive you want to format, clicking Erase, and choosing the Mac OS Extended (Journaled) format.

is creating a bootable external drive with “Install macOS High Sierra.

Make bootable usb mac os sierra