This hands-on tutorial is valid for both the public and developer beta versions of macOS Big Sur, and will also work with the final version of Big Sur upon its release later this year. Okay the Warning.Making a bootable macOS Big Sur USB drive is a quick and clean way to install a fresh copy of macOS on your Mac. Now, a warning message will be shown to you. Insert your USB Flash drive and Right-click on the flash that you want to create bootable for macOS Sierra with TransMac software then choose Format Disk for Mac. Once you’ve installed then you will see the screenshot below.This will load up OS X Recovery. The second method to install OS X is to restart the Mac and press and hold the COMMAND + R keys. Download and install the SDFormatter app from the SD Association website.Note that by default, the Mac will start booting up directly to the external hard drive until you change it. If your Mac does not have an SD card reader, you will need to use an external SD card reader that connects via USB. Insert the SD card into the SD card reader on your Mac.
![]() Right-click on Install macOS Big Sur → Show Package Contents.Step 5: Launch a new Terminal window by going to Applications → Utilities → Terminal.Step 6: Type sudo followed by a space in the Terminal window.Step 7: Drag createinstallmedia to the Terminal window from the Resources folder noted in Step 4.Step 8: Type -volume followed by a space.Step 10: In the ‘ Go to the folder’ box type /Volumes and click the Go button.Step 11: Connect a USB flash drive to your Mac it should appear in the Finder window.Step 12: Drag the USB flash drive volume into the Terminal window.Step 13: Press the Return key on the keyboard to submit the full Terminal command and when prompted, enter your password.Step 14: When prompted type a “y,” and press the Return key on the keyboard to submit.Terminal may ask for access to files on the removable volume.Step 15: The install process will begin by purging the contents of the connected USB drive. Close the macOS Big Sur installer once it’s fully downloadedStep 3: Open Finder → Applications. Until then, you can download the macOS Big Sur developer beta from Apple’s developer portal, or download the macOS Big Sur public beta via Apple’s public beta website.Step 2: After downloading macOS Big Sur, the installer will automatically launch. After Big Sur launches later this year, you’ll be able to download it directly from the Mac App Store. MacOS Big Sur USB installer video tutorialSubscribe to 9to5Mac on YouTube for more videos How to create a bootable macOS Big Sur USB install driveStep 1: Download macOS Big Sur. Keep in mind that APFS-formatted drives cannot be used to create the macOS Big Sur USB installer. Where To Get Copy Of Os X For Usb On Air Upgrade Your ExistingYou can erase your existing installation and start from scratch. You can choose to upgrade your existing macOS installation, going from macOS Catalina or previous versions of macOS to Big Sur. Be sure to watch the full video for step-by-step details on how to utilize the USB installer drive once you’ve created it using the steps outlined above.When installing macOS Big Sur, you’ll have several options at your disposal. The aforementioned steps walk you through the basic process of creating the installer, but the video walkthrough goes even more in depth.Details on how to enable booting from external/removable media via Recovery Mode are explained, along with direction on secure boot settings that I found helpful. MacOS Big Sur install media created Using the macOS Big Sur USB installerCreating the USB installer drive is easy, but actually using it can be challenging for users running Macs with Apple T2 Security chips. Android whatsapp to iphone transfer for mac serialIt’s especially nice if you manage multiple Macs at home.Do you make it a habit of creating bootable macOS USB install drives? Sound off in the comments with your thoughts on the matter. It makes it easy to install macOS Big Sur on any compatible Mac, even if you haven’t downloaded the macOS Big Sur installer on that computer. Read and watch our tutorial about creating separate APFS volumes for macOS Big Sur for more details.Although there are Internet Recovery options available for reinstalling macOS, I like the idea of keeping a macOS USB installer around.
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