Here is my problem: I have a PC with a ATA hard drive with Windows 2003 Server. This setup is fine. Recently I got a 160GB Seagate Barracuda Ultra ATA hard drive. When I open up the case to install, I notice that the old HD is configured as a master on the primary controller. So I put my new Seagate into one of the slot and choose the 'Cable Select' setting. Both HD's jumper setting is on neither master or slave. So their desgination is now dictated by the ATA ribbon cable connection. I plug the master (black) plug into the Seagate and the slave plug into the old HD. My question is: now that my OS is on the slave drive, how do I boot the OS from. I don't see an option on the boot sequence to boot from the slave HD. I can only select the HD drive letter which is C. Obviosuly I get an error because it is now booting from the Seagate drive which is freshly formatted. But it won't try to boot from the slave HD. Can someone please advise on how to boot from the slave drive or do I have to switch the HD around? Any help is greatly appreciated.