Regardless of what it is, Unisyn isn't liking the SATA PCI card + SATA drive combo. It's fine on an internal SCSI drive, and I think it did better using IDE as well as long as it was internal. The exact error it gives me is, "Error while specifying your authorization. Specified volume doesn't exist. Result Code -35".
I wonder if I could bypass this with a SATA to SCSI adapter, if they even make one of those. I also have a USB/SATA adapter but I'm thinking that won't work at all seeing as USB was new at the time.