SATA recognition on asus sli

[scruffles]

hi, i'm currently running 3500+ 64(stock fan), 1 gig corsair, 1 chaintec 6600gt, and a 120 gb hd all on 350W antec stock power supply (20 pin).

MY PROBLEM IS:

I have a Raptor Wd 74 gig drive that i want to use. When i put it in, the Raid software sees it, but windows, nor the rest of the computer recognized it as a regular drive. I want it to be my primary drive, but there is no way for me to install windows on it if it's not recognized.

any reason it might be doing this?

help is much appreciated.

 

[Shenkoa]

Did you partition it??

Right click on my computer
Left Click Manage
Left Click Disk Management

Click somewhere on your raptor's unpartioned space and select create partition.

 

[Geomagick]

Make sure the RAID is turned off in the bios. For some reason the board gets a little confused sometimes.