EFI Netboot a windows 7 VM

Hello

I would like to clone a VM with deploystudio in order to deploy it on my Macs.

I am using Fusion 6.0.5.

I have prepared a win7 vm and installed the OS (win 7 X64 pro with sp1).

I have shutdown the vm and then modified the vmx file adding firmware = "efi"

I boot with efi  :

It does not see my hard drive and it does not netboot.

I saw that my dhcp server give it an ip.

On my mac, I can netboot.

I have missed something ?

Thanks for your help.