Solution:
When we have just finished installing Windows on a system that contains four physical hard disks. The installation process has created a system volume and a C: volume on the first disk (Disk 0). The installation process also initialized the second disk (Disk 1) and the third disk (Disk 2) but did not create any volumes on these disks.
The status of Disk 1 and Disk 2 will be unallocated