I did all the bios configurations, however, I wasn't thrilled with the bios on this computer. It doesn't allow each drive to be configured separately.
It also annoyed me that I could not migrate the mechanical drive to the SSD even with a system image on DVDs and system image to other hard drive. I had to build up the SSD drive from scratch - and even then, it was slow as mud until I installed a 64 bit version of the OS on it. (I mistakenly installed a 32 bit Windows 7 on it).
Your idea of the OS on the mechanical drive being a conflict is a good one. Before nuking the OS on the mechanical drive, I will try using the mechanical drive through the USB port as an external drive. This computer has USB 3.0, so that should be plenty zippy enough for a slave drive. I suspect that in 10 years, mechanical drives will be obsolete much like floppy disks, tapes, zip drives, magneto optical drives, punch cards, and cassette tapes have become. SSD drives are already at the $1 per gig price.
Thanks for the useful answer! In the Catalyst forum, I got some useless and snotty response from some clown who thinks he knows everything but is incredibly ignorant. You have restored my faith in humanity!