We chose Parallels Lite due to their ease of setup and ability to function on top of a macOS host passing system information that is needed for the guest macOS to properly install. We will be using Parallels Lite (opens in new tab) that is freely downloadable from the App Store. All of the non-open source VM managers have free "lighter" versions that will serve our purpose but you can get their full fledge versions that provide various features that are beyond the scope of this article. You can run Virtualbox, VMware (opens in new tab), QEMU, and Parallels (opens in new tab). There are a few options for VM software solutions for you to choose from. You'll be able to have your proverbial cake and eat it too. If you upgrade the macOS on your physical Mac, the VM version is completely separate from that process so you'll still be able to keep the "old" macOS on the VM and run the "new" macOS for all of your other up-to-date programs. Since you needn't buy new hardware, you can simply run an instance of the macOS version that will run your application without issue regardless of that app being 32 bit or 64 bit for as long as you keep your VM. Think of it like the Matrix where the real world is your physical computer and the "dream" world in the VM. The VM takes resources from your actual computer and uses them to run itself in a contained environment as a separate system altogether. A virtual machine, or VM, is an emulated computer running on top of your current OS installation as a program. You can now quit Terminal and eject the volume.One possible solution to the 32-bit application dilemma is to run a version of the latest macOS that fully supports your app in a virtual machine. When Terminal says that it's done, the volume will have the same name as the installer you downloaded, such as Install macOS Monterey.After the volume is erased, you may see an alert that Terminal would like to access files on a removable volume.Terminal shows the progress as the volume is erased. When prompted, type Y to confirm that you want to erase the volume, then press Return.Terminal doesn't show any characters as you type. When prompted, type your administrator password.If the volume has a different name, replace MyVolume in the command with the name of your volume. Each command assumes that the installer is in your Applications folder, and MyVolume is the name of the USB flash drive or other volume you're using. Type or paste one of the commands below into Terminal, then press Return to enter the command.Open Terminal, which is in the Utilities folder of your Applications folder.Plug in the USB flash drive or other volume that you're using for the bootable installer.
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