I have D620 + nvidia gfx card.
I have managed to build the usb using windows dd.exe and sucessfully boot it up and go through the setup wizard.
When it is copying the files to the hard drive, I am getting an error:
Install Failed
Max OSX Could not be installed on your computer
The installer could not copy the necessary support files
Click restart to restart the computer and try installing again
I have tried this on two different d620 + nvidia gfx and got the same result.