Apple does not officially distribute macOS in ISO format [7]. To get a macOS Big Sur ISO from 2021 (such as version 11.2 or 11.5.2), you typically have to create one yourself using the official installer app or download a community-made version [6, 32]. Official Method: Create Your Own ISO

• GibMacOS (by CorpNewt) downloads recovery files directly from Apple’s servers and can build an ISO for VM usage.

Pros:

Version

| Specification | Detail | |---------------|--------| | | macOS 11.6.2 (Build 20G413) – latest 2021 stable release | | File size | ~12–14 GB (varies by build and creation method) | | Architecture | Intel 64-bit (x86_64) + native Apple Silicon (Universal) | | File system | APFS (Apple File System) | | Minimum RAM | 4 GB (8 GB recommended for VMs) | | Compatible hosts | VMware, VirtualBox, Parallels, Proxmox, UTM |

In 2021, macOS Big Sur (version 11) was widely reviewed as a massive "iOS-inspired" visual overhaul for the Mac, coinciding with the historic shift to Apple Silicon (M1) chips. Users generally found it to be a bold, modern leap forward, though early versions faced performance hurdles on older Intel hardware. Key Visual Changes