“Windows to Go” stick on QEMU / KVM

[takeawaydave]

*** Warning - complete KVM newbie ***

Fresh trusty install and I have then installed Qemu and KVM. I have a Windows 8.1 Windows To Go USB stick (Windows 8.1 Enterprise) and would like to run this as a visualized instance. I have done the following so far:
1. tried to pass through the physical drive to the VM instance
2. install OVMF to allow UEFI based booting

I achieved the pass through of the physical device by adding the following to my config file:

  <devices>
     <emulator>/usr/bin/qemu-system-x86_64</emulator>
     <disk type='block' device='disk'>
       <driver name='qemu' type='raw'/>
       <source dev='/dev/sdi'/>
       <target dev='vdb' bus='virtio'/>
       <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
     </disk>

And I also installed OVMF and then added the following:

  <os>
     <type arch='x86_64' machine='pc-i440fx-trusty'>hvm</type>
     <loader>OVMF.fd</loader>**
     <boot dev='hd'/>
     <bootmenu enable='yes'/>   
  </os>

Am I on the right track here ? Has anyone passed a WTG stick through before ? I gues it would be like passsing any physical disk directly through.

Thanks !

Edit entire xml file is:

<domain type='qemu'>
<name>WTG</name>
<uuid>0509ff4c-6958-2463-321c-512874d8eaac</uuid>
<memory unit='KiB'>8388608</memory>
<currentMemory unit='KiB'>8388608</currentMemory>
<vcpu placement='static'>8</vcpu>
<os>
<type arch='x86_64' machine='pc-i440fx-trusty'>hvm</type>
<loader>OVMF.fd</loader>
<boot dev='hd'/>
<bootmenu enable='no'/>
</os>
<features>
<acpi/>
<apic/>
<pae/>
</features>
<clock offset='localtime'/>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>restart</on_crash>
<devices>
<emulator>/usr/bin/qemu-system-x86_64</emulator>
<disk type='block' device='disk'>
<driver name='qemu' type='raw'/>
<source dev='/dev/sdi'/>
<target dev='vdb' bus='virtio'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
</disk>
<controller type='usb' index='0'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
</controller>
<controller type='pci' index='0' model='pci-root'/>
<interface type='network'>
<mac address='52:54:00:fb:97:4d'/>
<source network='default'/>
<model type='rtl8139'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
</interface>
<serial type='pty'>
<target port='0'/>
</serial>
<console type='pty'>
<target type='serial' port='0'/>
</console>
<input type='tablet' bus='usb'/>
<input type='mouse' bus='ps2'/>
<input type='keyboard' bus='ps2'/>
<graphics type='vnc' port='-1' autoport='yes'/>
<sound model='ich6'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
</sound>
<video>
<model type='vga' vram='9216' heads='1'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
</video>
<memballoon model='virtio'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
</memballoon>
</devices>
</domain>

The USB WTG stick is confirmed as:

# lsscsi -v | grep King
[8:0:0:0] disk Kingston DT Workspace KS13 /dev/sdi

The domain starts up, gets to bitlocker, passes bitlocker and then the Windows 8 logo appears for 6/7 seconds and then i resets and goes straight back to the EFI shell.