Make sure that your newly formatted drive is selected and follow the prompts. Select Install macOS and then click Continue. The next step is to fill it back up again. Step 6: Now you’ve completely wiped your drive. Keep the name of the new drive as Macintosh HD and make sure that the format is set as either “APFS (Encrypted)” (if you have a modern Mac with faster SSD) or “Mac OS Extended (Journaled)”. Step 5: Ensure your Mac’s main drive is selected and then click Erase. Select Disk Utility and then click Continue. Step 4: Eventually, you’ll be greeted by the macOS Utilities menu. Note: If you have a T2-chip enabled Mac, you will first need to enable booting from external storage via macOS Recovery. That will take you into the boot menu and allow you to select the USB drive. Turn the Mac back on while holding the Option key. Step 3: With your USB stick ready to go, turn your Mac off and insert the stick into an available port. We have a guide for that – course we do – so make sure you follow it before moving on to the next step: How To Create macOS Big Sur Bootable USB Flash Drive Installer. Step 2: Now we need to create a bootable USB drive. You can download the the installer for macOS 11 Big Sur from here: Download: macOS Big Sur 11.0.1 Final Version Released, Update Now.

Step 1: Before we begin, you need to have the installation file on you. How To do A Clean Install Of macOS 11 Big Sur With that all out of the way, let’s get started. You can check the compatibility of macOS 11 Big Sur with Mac models here: macOS 11.0 Big Sur Compatibility: Which Macs Are Compatible With Apple’s Latest Desktop OS? You’ll need to have a Mac that supports macOS 10.11 Big Sur.At the very least, make sure that you have all of your important documents saved somewhere that isn’t your Mac.

You can use Time Machine or make a clone of your drive. Make sure everything is fully backed up.With that said, and now that you know you need to install macOS 11 Big Sur via a USB stick, here’s what you’re going to need.

Install big sur flash drive