![]() You need to install a new utility to download a beta macOS. Step 2: Download and install the new “macOS Sierra Beta Access Utility” pvm file-it will probably be named “macOS Sierra.pvm” and will be about 10 GB. So, it is a good idea to make a copy of this VM. ![]() ![]() Step 2 will modify this VM in such a way that you cannot go back to the customer release. See Figure 1.įigure 1_Install Sierra customer release in a VMĪfter the customer release of Sierra is installed, download and install any Sierra updates. Installing the customer release of Sierra in a VM is easy: just drag and drop the “Install macOS Sierra.app” to the New VM Wizard in Parallels Desktop, and then follow the prompts. ![]() In the new installation process for Sierra beta macOS releases, you first need the customer release of Sierra installed in a VM-you cannot just start with a new, blank VM. Step 1: Install the customer release of macOS Sierra in a VM Apple has now significantly changed the installation process for Sierra beta macOS releases, and in this blog, I will show you the new process as I install and use macOS 10.12.4 (Sierra) beta 2. I have previously written about using beta macOS releases in VMs here and here. I have been using VMs like this for years, and I have written up bugs in beta OSes released both for Apple and for Microsoft so that the final OS release will be free of these issues. A VM isolates those issues in a sandbox-like environment so that any such issue will not damage anything. By its very nature, a beta OS will contain bugs, unfinished features, and other ‘gotchas’ that might play havoc with your documents or your work. A Parallels Desktop virtual machine (VM) is an ideal environment for using a beta release of an operating system.
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