I have a SATA hard drive that I need to format, but the only person I know with a SATA system is my boss...so when he left today, I opened his computer. He has two SATA hard drives, and I unplugged one and connected mine. It didn't recognize the new disk, and plugged his back in. Although I have entered BIOS, I made no changes...but now I get BOOT DISK FAILURE, INSERT SYSTEM DISK AND PRESS ENTER...all of the plugs are exactly as they were before the "intrusion" (I did have his permission, so long as everything worked in the morning.) If I don't get this figured out now, I may be fired. Ok, I will be fired. Please help!