Hard drive problem with Snap Deploy 2

EDIT 2: Solved - I had originally the second drive plugged into SATA port 5, as it was the easiest one to reach...but I fiddled and got it into SATA 2 and while I still saw the error, it didn't halt on it...weird.

I am trying to PXE boot the Master Image Creator and it froze at the "Loading, Please Wait" message. Following other's advice, I hit F11 and removed the "quiet" kernel parameter, and I got the error

"ATA abnormal status 0x7f..."

After unplugging the second hard drive the Creator booted fine. I need this hard drive plugged in however to create the image on. I have read some posts about this and it looks like it could be a raid thing (although I dont have raid configured, and can't find anything to do with it in my BIOS...)

Is there anything I can do to resolve this?

Thanks in advance...

EDIT: I have 2 SATA hard drives, both 320GB and no IDE drives at all plugged in...if it makes a difference