I am also having a similiar problem here. I have the SL-915GPro-FGR mother board and installed a 40GB hard drive. The drive is recognized as Third IDE Master and not Primary IDE Master. Everything is set for the hard drive to be recognized as Primary Master, but it does not seem to work. It will also not recognize the CD-ROM at all that is installed on IDE 2 - The hard drive is installed on IDE1.
Any ideas? Is there something in the BIOS that I am missing, a step or change of settings.
Thanks,
Eric