1. Enroll in Apple’s Beta Software Program.
  2. Download a fresh copy of VMware Workstation Player for Windows or Linux from the official VMware site. The free trial of this product has no expiration if used for non-commercial purposes.
  3. You’ll need to unlock your installation of VMware to use Mac operating system as a guest following these instructions (external link).
  4. On a computer running an official/genuine instance of OS X, download macOS Sierra from the App Store:
    App Store - macOS Sierra
  5. Once the download completes, open the Terminal application, and either save a new file with the following contents, 
     #!/bin/bash
# Mount the installer image
hdiutil attach /Applications/Install\ macOS\ Sierra.app/Contents/SharedSupport/InstallESD.dmg -noverify -nobrowse -mountpoint /Volumes/install_app

# Create the macOS-Sierra Blank ISO Image of 7316mb with a Single Partition - Apple Partition Map
hdiutil create -o /tmp/macOS-Sierra.cdr -size 7316m -layout SPUD -fs HFS+J

# Mount the macOS-Sierra Blank ISO Image
hdiutil attach /tmp/macOS-Sierra.cdr.dmg -noverify -nobrowse -mountpoint /Volumes/install_build

# Restore the Base System into the macOS-Sierra Blank ISO Image
asr restore -source /Volumes/install_app/BaseSystem.dmg -target /Volumes/install_build -noprompt -noverify -erase

# Remove Package link and replace with actual files
rm /Volumes/OS\ X\ Base\ System/System/Installation/Packages
cp -rp /Volumes/install_app/Packages /Volumes/OS\ X\ Base\ System/System/Installation/

# Copy macOS Sierra installer dependencies
cp -rp /Volumes/install_app/BaseSystem.chunklist /Volumes/OS\ X\ Base\ System/BaseSystem.chunklist
cp -rp /Volumes/install_app/BaseSystem.dmg /Volumes/OS\ X\ Base\ System/BaseSystem.dmg

# Unmount the installer image
hdiutil detach /Volumes/install_app

# Unmount the macOS-Sierra ISO Image
hdiutil detach /Volumes/OS\ X\ Base\ System/

# Convert the macOS-Sierra ISO Image to ISO/CD master (Optional)
hdiutil convert /tmp/macOS-Sierra.cdr.dmg -format UDTO -o /tmp/macOS-Sierra.iso

# Rename the macOS-Sierra ISO Image and move it to the desktop
mv /tmp/macOS-Sierra.iso.cdr ~/Desktop/macOS-Sierra.iso

    or run 

    curl https://www.nickmcummins.com/make-macos-sierra-iso.sh > /tmp/make-macos-sierra-iso.sh

    and then execute it by running sudo chmod +x /tmp/make-macos-sierra-iso.sh && /tmp/make-make-macos-sierra-iso.sh. Once completed, you should see a file named macOS-Sierra.iso on your desktop.

  6. Now boot up VMware Player and create a new virtual machine using the File dialog. Using the iso disk image we just created, and with macOS 10.12 selected as the guest os, finish the setup for your new image.
    Guest Operating System - Select macOS 10 12
  7. You’ll need to erase the virtual hard disk medium as seen in the following screenshots. DiskUtility - VMware Virtual STA hHard Drive
    DiskUtility - Erase Hard Drive confirmation
  8. Now you will be able to proceed with the installation. Once completed, you should be all ready to enjoy your new macOS Sierra vm!
    Installation macOS Sierra
    macOS Sierra Screenshot

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