Thanks for your quick response. The last computer I had, had an intel 865g chipset, and I think the bios was last updatable in 2004. Not sure. At any rate, after going into the bios, I am still somewhat confused. In addition to the esata drive, internally the computer had a western digital 320 gig hard drive and I installed 2 drives each with a terabyte, and then a 300 gigabyte IDE drive as well. I wasn't really considering a raid configuration. I was going to dual boot and install two operating systems on the 300 gig drives and keep the data separate on the tb drives. And then I was going to use the Esata drive to do back ups. Not sure. I did make two changes in the bios. I enabled the IDE channel and changed the onboard chip on sata port 4 & 5 to "sata type" from IDE. I'm a little embarrassed but I don't really KNOW what I'm doing and I'm not sure how to configure things. I noticed that the SATA drives were in AHCI mode (before the option available for port 4 & 5 to be changed from IDE). Not sure if this is clear. But any ideas or information would be helpful to me. Thank you!