....I know I'll be told to not trust RAID as a backup option but unfortunately I did. I have two Raid arrays in place. Raid 1 for the OS and Raid 5 for storage. Everything was working fine until yesterday. Windows updates took place, my system rebooted and I had no longer RAID 5 array working. When I went into the BIOS my setting for the controller was changed from RAID to IDE. I changed it back to RAID hoping that it would work. No change. I went into the controllers config and 2 out of 4 disks in Raid 5 array are saying that they are not members of the array anymore. I have no option to add them back to the array. I can delete or create a new one or set the disks to non raid like the other two. Apart from that my OS took a dive too. I am not sure what is the right procedure here. So here come my questions and I am open to your suggestions. 1. Am I going to hurt my Raid 5 array by reinstalling the OS on my Raid 1 ? 2. If not should I disconnect the Raid 5 drives before I install the OS again? 3. What are my options for recovering the data from Raid 5 ? Procedures ? Thanks again.