Dear Gramps,
This driver worked perfectly. I remember you also helped me back in Jun 2014 when I had another boot failure – thank you so much every time! 
For those who is having same issue – cannot see any available HDD to install Win2012 R2 Essential during installation – can follow Gramps’s guide above. Select load drives, go to the folder where you copied the Marvel drivers into, then hit “browse” button. You will now see the attached HDD to your unit!
Once again, thank you!
