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.
Need help booting your ISO? Leave a comment below (or check r/macOSVMs on Reddit for archived 2021 threads). macos big sur iso 2021
| | Cons | | :--- | :--- | | Best Balance: Great mix of modern UI and VM performance. | No Future Updates: Officially considered "vintage" by Apple. | | Visuals: The Control Center and widget redesign are excellent. | Browser Lag: Safari is outdated; third-party browsers required. | | Stability: The 11.6+ builds are very stable compared to early releases. | Dev Tools: No longer supports the latest Xcode/Swift versions. | | Integration: Works well with VMware Tools / Guest Additions. | Security: No longer receives active security patches. | But why “2021”
A: You have downloaded a fake. A real macOS Big Sur ISO is 12GB to 14GB . Delete it immediately. Need help booting your ISO