At work I have a computer with five hard drives. Drive C was connected to the motherboard along with the ROM drive. The other four data hard drives (160MB) each were connected to an adaptec card. I connected another hard drive to the motherboard to see what was on it, but I think I forgot to switch the master slave configuration. The computer booted fine, but when I turned off the computer and restarted later on, an error message read "No operating system found". Now, the only way I can get the C-Drive to boot is if I unplug all the other hard drives and plug the C drive into the adaptec card. No other configuration seems to work. Are there any thoughts on how I can get the computer to recognize the C drive as the one with the operating system with multiple hard drives installed? I have windows 2000, 2GB RAM, and 2.4 GHz processor. Thanks. Bret PCBUILD's List Owners: Bob Wright<[log in to unmask]> Drew Dunn<[log in to unmask]>