I also have a P5K Deluxe, set the BIOS for the ICH9R to Raid, created the Raid 1 with 2x500GB WD, put a ghost image of the OS that I created on the Raid with no problems. . .until I started up windows XP Pro, BSOD. I undid the Raid, changed the BIOS back to IDE, started Windows XP Pro no problem and both the WD's had the same data from the Ghosted image, like they should have (which means the Raid works).
Then, tried to use the drivers from the CD (created a floppy from CD during Boot), set the BIOS again to raid for the ICH9R, tried using the floppy during Windows XP setup, but XP said that the file system on the floppy was not recognized? I undid all of this, went into XP, looked at the floppy, no problem, everything was there.
I then set the BIOS to AHCI for the Sata, tried to do a clean install of XP, BSOD before finishing getting setup for installation. Had to go back to IDE.
I guess a question would be, does XP have to have a clean install when doing Raid 1, or is there another work around for this?
So, here I am, looking for answers.