hdiutil attach /tmp/BigSur.dmg -noverify -mountpoint /Volumes/BigSur
Always download the installer officially via the App Store or Terminal. Convert it to a DMG yourself if necessary, rather than risking your system security with third-party downloads. mac os big sur dmg
⚠️ : macOS Big Sur is no longer the latest macOS version. Apple officially provides installers via the App Store, not direct DMG files for the OS itself. A “DMG” you find online may be a disk image containing the installer app, not a bootable DMG of the OS. hdiutil attach /tmp/BigSur
Would you like help with any specific step, like creating a bootable installer or verifying a suspicious DMG file? mac os big sur dmg
: Wiping your drive to start fresh and remove system clutter.
shasum -a 256 /path/to/BigSur.dmg