How To Create macOS Sierra 10.12 USB Boot Disk

Hey gang..

Yet another post about Sierra. Only this time I will be showing you how to create a Bootable USB in case you want to nuke your Test Mac, and install macOS Sierra fresh. 

I know most of you already know how to do it, but I heard rumors of some people having issues doing so. That's why I will clarify with this guide.

Let’s First Begin With The Prep Work:

1. You’re logged in with an Admin account on your Mac.

2. You have at least an 8 GB blank USB 2.0 or 3.0 Disk.

3. Have a copy of macOS Sierra 10.12 Developer Preview Installer and that it’s located in the Applications folder. Download from this post

4. Open TextEdit and make document as plain text.

5. Copy and paste the following one line Terminal command,

sudo /Applications/Install\ 10.12\ Developer\ --volume /Volumes/NameOfUSBDisk --applicationpath /Applications/Install\ 10.12\ Developer\ --nointeraction

Now, with all the prep work taken care of, let’s begin creating the USB Boot Disk.

Insert your USB Disk in an available socket and note the name. In my case, the name of the USB is “USB1”.

From the text document created earlier, replace “NameOfUSBDisk” with the name of your USB Disk.

Final Steps: Open Terminal and copy and paste the one line Terminal command from the text document, followed by enter key.

You’ll then be asked to enter your Admin Password and after pressing carriage return, the creation of the macOS 10.12 USB Boot Disk Installer will begin.

And that’s all there is to it.

Thanks and Peace.

Source :


Install Disk Creator ( automates this for you and works with Sierra

July 23, 2016 at 2:38 AM comment-delete

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