"Degraded/rebuild drive detected. It is suggested to rebuild in the operation system to preserve the completeness of your data." I do not understand what to do. The computer has Windows XP Pro, 7 and 8. XP has 1 terabyte of 2 drives, Windows 7 and 8 each have two drives of SSD types. I do not understand RAID. I was told it has a steep learning curve. The IT fellow I know has reached his limits. What should I do? Thank you.