Macos Big Sur Iso 2021 Direct

A: No. Dual booting macOS on standard PC hardware (Hackintosh) requires OpenCore, not a raw ISO. You would extract the .app from the ISO and use OpenCore’s installer.

hdiutil create -o ~/Desktop/BigSur2021 -size 16384m -volname BigSur2021 -layout SPUD -fs JHFS+ This creates a 16GB sparse image. hdiutil attach ~/Desktop/BigSur2021.dmg -noverify -mountpoint /Volumes/BigSur2021 sudo /Applications/Install\ macOS\ Big\ Sur.app/Contents/Resources/createinstallmedia --volume /Volumes/BigSur2021 --nointeraction Step 4: Convert to ISO (For VMware/VirtualBox) Wait for the createinstallmedia command to finish (~20 minutes). Then detach and convert:

mv ~/Desktop/BigSur2021.iso.cdr ~/Desktop/BigSur2021.iso You now have a pristine, bootable macOS Big Sur (2021) ISO. The 2021 ISO is specifically required for VMware because newer macOS versions (Ventura+) require hardware NVRAM fixes that break on older VMware versions.

A: You have downloaded a fake. A real macOS Big Sur ISO is 12GB to 14GB . Delete it immediately.

Alternatively, if you have a legitimate copy from 2021:

But why “2021”? macOS Big Sur was originally released in November 2020. The 2021 versions (specifically 11.2, 11.3, and 11.4) contained critical stability fixes, better M1 emulation support, and security patches that the initial 2020 launch lacked.