5.1) Ensure there is a Measured Launch alert after adding/removing a GPU.
5.2) Ensure the Measured Launch alert can be mitigated by resealing when adding/removing a GPU.
The following steps cover Tasks 5.1 and 5.2.
a) Power down all VMs.
b) With the OpenXT system up, ensure that no VMs have the GPU allocated to it:
i) VM Details --> Hardware --> 3D Graphics (experimental): DISABLED
ii) VM Details --> PCI Pass Through --> REMOVE
c) Shutdown OpenXT.
d) Remove the GPU.
e) Power up the OpenXT system.
f) The system should recognize the change and display, "SECURITY WARNING: Unauthorized system modification detected!" (Task 5.1).
g) To mitigate this, we must reseal the system.
h) Select Continue and press enter.
i) Enter the administrator password.
j) To reseal the system, select Reseal & Reboot and press enter.
k) The system should reseal and the OpenXT main screen will appear (Task 5.2).
l) Shutdown OpenXT.
m) Install a different GPU.
n) Power up the OpenXT system.
o) The system should recognize the change and display, "SECURITY WARNING: Unauthorized system modification detected!" (Task 5.1).
p) To mitigate this, we must reseal the system.
q) Select Continue and press enter.
r) Enter the administrator password.
s) To reseal the system, select Reseal & Reboot and press enter.
t) The system should reseal and the OpenXT main screen will appear (Task 5.2).