How to encrypt a USB thumb drive on MacOS High Sierra using Command Line
Here's how to encrypt a USB thumbdrive with HSF+ (Journaled) using
Disk Utility and
This will teach you how to encrypt your drive as
HFS+ (Journaled). Do not follow these steps if you want to encrypt using
Step 1 - Insert a USB drive and Open up Terminal
Step 2 - List Your Drives
Our first step is to list our all of our available drives. This includes our main hard drive as well as the USB thumb drive. Using terminal, type this command.
You should see something really scarry like this.
In order to find our USB thumb drive, we'll need to look for some clues.
Clue 1 - Look for something that says
external, physical. This means it's an external, physical drive.
Clue 2 - Look for something that matches the name of your USB thumb drive. My drive is currently titled "STORE N GO".
Take node of the "IDENTIFIER". My identifier is titled
disk2s1 and that is the drive and partition we will be formatting.
Step 3 - Reformat
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 note that the only reason why this process is work is because we are making a GUID partition map (
diskutil eraseDisk JHFS+ "My New Storage" GPT disk2
Step 4 - Encrypt
This final step is to encrypt the file partition with the disk identifier
diskutil cs convert disk2s2 -passphrase