How to create macOS High Sierra installerġ) Download the High Sierra installer from Mac App Store. It has since been updated with appropriate instructions for the public macOS High Sierra release. NOTE: This article originally provided instructions for creating a USB install drive from a developer-only beta of macOS High Sierra. This final step is to encrypt the file partition with the disk identifier disk2s2.In this guide, we’ll demonstrate how to create a USB install drive from your downloaded macOS High Sierra software update so that you can install it to multiple machines without redownloading, perform clean install, keep a copy safe for troubleshooting purposes and more.Īll you’ll need for this guide is a copy of macOS High Sierra from Mac App Store and a USB stick or an external drive of at least 12GB capacity. diskutil eraseDisk JHFS+ 'My New Storage' GPT disk2Įrase the disk and format it for Mac OS Extended Step 4 - Encrypt Take note that the only reason why this process works is that we are making a GUID partition map ( GPT). This command is telling Apple's Disk Utility to erase the disk and format it for Mac OS Extended, Journaled Hierarchical File System Plus (JHFS+).

Take node of the 'IDENTIFIER.' My identifier is titled disk2s1, and that is the drive and partition we will be formatting. My drive is currently titled 'STORE N GO.'

Clue 2 - Look for something that matches the name of your USB thumb drive.

Clue 1 - external, physical means it's an external, physical drive.

To find our USB thumb drive, let's look for clues. You should see something terrifying like this.

diskutil list | grep 'external, physical' Show all available external hard drives. Since we plan to format a USB drive, we will use grep as a filter and only show external drives. Our first step is to list all of our available drives. Step 1 - Insert a USB drive and Open up Terminal Step 2 - List Your Drives Do not follow these steps if you want to encrypt using APFS.

This article will teach you how to encrypt your drive as HFS+ (Journaled). How to encrypt a USB thumb drive with HSF+ (Journaled) using Disk Utility and Terminal.

Mac sierra how to format usb drive