Have you enter your BIOS utility and looked for an option to turn off RAID?
If not go to your BIOS setup utility at boot up and look for the menu containing the option to turn off RAID. I must caution you, doing so may make you lose the data on the SATA drives.
If your SATA drives are plugged into dedicated RAID SATA ports check to see if there are ports that are not listed as RAID and plug the drives into those.
Check your motherboard manual to see if there is a jumper setting which turns raid on or off.
Format the drives once they are configured as none raid and install your operating system to sata0.
There are many ways to setup RAID through BIOS or software and how many drives the array includes, so, it makes it tough to give concise directions, without knowing how the array was setup in the first place.
But my first theory is try going to the BIOS first and disabling the RAID option.
Here's some info:
Enter your PC's BIOS setup screen—usually by pressing Del, F2, or whatever your particular BIOS setup command is, before loading Windows—and make sure that all the SATA ports you're using are enabled. Next, disable any unused SATA ports (some RAID controllers mistake unused ports for missing drives), and then turn off the RAID feature. Save your settings and reboot when you're done. (BIOS screens vary considerably, so consult your manual if you're not sure how to change these settings)
You can use GParted a Linux related hard drive utility to see everything on your hard drives (even hidden files) and delete the partitions so the data is formatted and wiped out completely. http://sourceforge.net/projects/gparted/
Edited by MrBruce1959, 06 July 2010 - 11:37 PM.