boot support for ProLiant ML10 Server

Hi ,

  i Have ProLiant ML10 with 2x 4TB hard disk. Now the problem is that winddows doesn't support hard disk more then 2TB and i have 4TB, for which  2TB wasted in boot disk.

I come to know that To use hard disk more then 2TB , boot setting must be UEFI not BIOS . But I am not able to find any UEFI or efi support for ProLiant ML10.

 Kindly Help Me to utalize this wasted 2TB space.