Creating a bootable macOS USB Drive

Przemyslaw Ozgo
Nov 24, 2020

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Prerequisites:

  • Download macOS via App Store
  • Plug in a 16GB(or bigger) USB Drive and erase it using Disk Utility

For some time macOS comes with a USB creation tool built into the Installed

sudo /Applications/Install\ macOS\ Big\ Sur.app/Contents/Resources/createinstallmedia --volume /Volumes/USB --nointeractionErasing Disk: 0%... 10%... 20%...100%...
Copying installer files to disk...
Copy complete.
Making disk bootable...
Copying boot files...
Copy complete.
Done.

Boot mac with alt/option key pressed and select new Installer to run the installation process.

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Przemyslaw Ozgo
Przemyslaw Ozgo

Written by Przemyslaw Ozgo

I eat Docker for breakfast, Ansible for lunch and for dinner I usually have Jenkins, and I like to spice it up with Go and Bash.

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