The given question is incomplete as it does not has the complete information.
Following is given the complete question that i have found from the internet source:
Question:
You are installing Windows on a new computer.
Using RAID controller on the motherboard, you configure three hard disks in a RAID 5 array. You leave the array unpartitioned and unformatted. You edit the BIOS boot order to boot from the optical drive. You insert installation DVD, boot to the disc, and start the installation.
When you are prompted to select the disk where you want to install Windows, the RAID array you created does not show as a possible destination disk.
What should you do?
Answer:
After editing the BIOS boot order from the optical drive, the installation will be continued when you will insert the DVD disc. After it when you will be prompted to select the disk, for the installation of windows, there will not any option or destination disk so it would work by performing following action:
After you insert the DVD disc for installation, locate the "Load Driver" option and click it.
I hope it will help you!