0000:01:0c.0 RAID bus controller: Integrated Technology Express, Inc. IT/ITE8212 Dual channel ATA RAID controller (PCI version seems to be IT8212, embedded seems (rev 11)
0000:01:0d.0 RAID bus controller: Silicon Image, Inc. (formerly CMD Technology Inc) SiI 3512 [SATALink/SATARaid] Serial ATA Controller (rev 01)


From ^^ it seems to me like you have an onboard raid controller.
I also have one but it is one of 'promise technologies' for which the first hard drive gets mapped to /dev/hde
Do you happen to know the brand/model number of your system board ?

With that information gathered perhaps you should try posting your question on 'http://www.linuxquestions.org/', its a linux specific forum.