hdiutil create -o /tmp/BigSur -size 12500m -volname BigSur -layout SPUD -fs HFS+J
For VMware/Proxmox users seeking an ISO: big sur iso
The quest for a macOS Big Sur ISO file usually stems from a specific technical necessity. Unlike the standard upgrade process, which guides a user seamlessly from the App Store to a polished operating system, the need for an ISO implies a detour: you are likely looking to install macOS 11 on a Virtual Machine (VM) like VMware or VirtualBox, or you are attempting a clean install on hardware that refuses to boot the standard installer packages. hdiutil create -o /tmp/BigSur -size 12500m -volname BigSur