hdiutil attach /tmp/BigSur.dmg -noverify -mountpoint /Volumes/BigSur Create the installation media:
To create a macOS Big Sur ISO (2021) , you must first obtain the official installer from Apple and then use Terminal to convert it into a bootable disk image. Apple does not provide direct ISO downloads; they only offer the installer. 1. Requirements macos big sur iso 2021
In the world of Apple operating systems, macOS Big Sur (version 11) represented a massive seismic shift. Released in late 2020 and dominating the spotlight throughout 2021, it introduced the biggest design overhaul in decades and laid the groundwork for Apple Silicon. hdiutil attach /tmp/BigSur