I just installed windows xp, the installer saw the hard drive just fine and installed xp. When I boot, I get a blank screen, nothing else. I also made sure to use the integrated and not marvell sata ports. My hard drive is a wd caviar blue 500gb sata III.
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Hmm... It seems like the xp bootloader is too old to work with my computer. I installed ubuntu alongside xp and grub started just fine.