Windows Server 2012 R2 on HP Microserver (N36L, N40L, N54L)

[ElectricHuman]

Having been through the rather excruciating and time consuming process of trying to load Windows server 2012 R2 essentials onto my now 3 year od HP N54L microserver, imagine my delight to discover at the end of the road all I needed to do was update the BIOS?  Thank you so much your comment which confirms the topic of the thread in which it appears.  However I have one question, which I suspect is self evident but after so much effort I want to be wrong.  The question then, if I update the BIOS will I lose access to the the addiitonal caddy, which curently houses my OS and an extra drive?  Many thanks in advance.