Gave up trying to get Hyper-V Server 2012 to work…

http://technet.microsoft.com/en-us/library/ee731893%28WS.10%29.aspx

• Boot Hyper-V Server from USB flash devices
• Saves hot-swap drive bay for storage
• 16GB Flash device recommended
  • The following example sizes the VHD file for a 16GB flash drive
  • Get the fastest one you can
  • This device will be wiped and any data on it lost

During this procedure, carefully keep track of the disk numbers, partition numbers and drive letters. A mistake can ruin your whole disk!

1) Download and install WAIK: http://www.microsoft.com/en-us/download/details.aspx?id=5753

2) Download the Hyper-V Server .iso file

3) Mount the Hyper-V Server .iso file

• Free tool to mount .iso files

4) Insert the 16GB USB flash drive

5) Create, mount and prepare the VHD (virtual hard disk)

Windows will prompt you to format the VHD; just click 'Cancel'

Open a command prompt as administrator:

mkdir c:\hvvhd
diskpart
create vdisk file=c:\hvvhd\hyperV.vhd maximum=12288 type=fixed
select vdisk file=c:\hvvhd\hyperV.vhd
attach vdisk
create partition primary
assign letter=r
format quick fs=ntfs label=hyperV

6) Apply the install image to the VHD.

Leave the “diskpart” window open and open another command prompt as administrator.

Change into the appropriate directory (x86 or amd64) based on the architecture of your technician workstation

cd "C:\Program Files\Windows AIK\Tools\<arch>\"
imagex.exe /apply g:\sources\install.wim /check 1 r:\

7) After imagex finishes, switch back to the “diskpart” command window (where diskpart is still running) to detach the VHD file and prep the USB flash drive:

detach vdisk

Determine the disk number of the USB flash drive and prepare it:

list disk

select disk 1
clean
create partition primary
select partition 1
active
format quick fs=ntfs
assign letter=z

8) Switch back to the “imagex” window and copy the VHD to the USB target disk:

copy c:\hvvhd\hyperV.vhd z:

9) Prep the boot sector of the USB flash drive:

cd /d “c:\program files\Windows AIK\tools\PETools\<arch>” bootsect /nt60 z: /force /mbr

9)

'boot' files from the VHD to the USB target disk:

bcdboot x:\Windows /s z: /v

8) Switch back to the “diskpart” window and dismount the VHD file:

detach vdisk
exit

9) Safely Remove the USB flash drive from the technician workstation and test.