Physical disk in OME on windows 2008

Hi

I have installed OMSA (7.4.0) on Windows 2008 R2.

However, I cannot see the physical disk in OME.

While I install OMSA (7.4.0) on Windows 2012 R2. I can see the physical disk in OME.

Is it not support on Windows 2008?

Thanks,

Rocky