The next screen decides how much space the virtual machine will occupy. The defaults for Memory and how many CPU Cores should be fine for an initial experiment (and these can be changed later). Once the IPSW is selected, choose the virtual hardware to allocate to the virtual machine. Either click Continue for the same OS or click Browse and select the IPSW obtained from the Apple Developer portal. The next screen gives the option to either install the OS the host operating system is running or a different version of macOS via an IPSW. For a Mac running macOS 12, 13, etc, this will be the first option so click there. The list of operating systems will reflect those that can be run as virtual machines with the current architecture. Given that we’ll be installing a beta OS from Apple for this example, we’ll click Virtualize. Here, there are options to Virtualize or Emulate. Once installed, open the UTM app and click on the plus sign to create a new virtual machine. It can run guest operating systems in Windows, Linux, etc – emulating RISC, ARM, Intel, etc. It also emulates via the QEMU system emulation. UTM uses the new virtualization framework ( documented here) from Apple, so runs the most modern virtualization stack currently available on a Mac. UTM is a virtualization tool available on the Mac App Store at with a GitHub at.

Macos ipsw