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.Step 2: On your Mac laptop, press the Power button and hold the Option key until the screen displaying bootable volume options appears.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. Step 1: Plugin the bootable USB drive into the USB port of your Mac system. Afterward, follow the on-screen instructions in the macOS installer window. Step 3: Choose the bootable USB drive and click the "Continue" option. Step 2: Press and hold the Power button on your Mac until the Startup Option displaying bootable volumes appears on the screen. Step 1: Plugin the bootable USB flash drive into the USB port on your Mac system. Afterward, follow these instructions in sequence: For Mac with The M1 Apple Silicon Chip How to Boot the Mac Using the Created Bootable USB Drive?īefore booting your Mac system with a bootable USB drive, check whether you are using a Mac with an Apple Silicon chip or an Intel processor. Your bootable USB drive is all set, and you can use it to install macOS on any Mac system. Once the copying process is complete and Done appears in the Terminal panel, close the Terminal. Step 8: The Terminal will start copying the macOS installer file on your USB after formatting everything on it. You will see this message appear: "To continue we need to erase the volume at /Volume/Untitled," press Y and press Enter. Step 7: Afterward, type the Admin password and hit the "Enter/Return" key.
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