I have a NT Server that I am installing on a existing network. I wanted it to be a BDC. When I ordered it from the factory they made it a PDC. So I formatted it to reinstall as a BDC after it was on my network. It has a Dual boot controllers. Two SCSI's. I put in my NT cdrom and booted to it. Then tried to format and reinstall over the existing one. Now One of my Cdroms that is the primary, won't boot. If I have it plugged in and boot to the cdrom it says I don't have a hard drive. If I unplug it and boot to the second cdrom it works fine. Any suggestions on how to fix this and get back to the full duplex mirrored Nt server that I wanted??

I had a similar problem while installing an NT server on an adptec SCSI raid adapter. First you must configure your SCSI raid adapter to act as a mirror, it is probably already configured so if it was a mirror before. Then for windows to install on a SCSI adapter it must have the drivers before it tries to detect the hard disks. When you start the installation from the CD-rom you get to a black screen that says that the setup is inspecting your hardware, when that screen shows up hit F6(not 100% sure it is F6 try other F-keys too) this will then the instllation process you want to specify additional controllers. Setup should then ask you to insert the driver disk.

One note for next time... rather than re-install, just demote the existing machine to a BDC, setup proper domain/network stuff (before attaching to network) and reboot the server. When it comes back up, attach to network, you now have a sparkling new BDC server on your network!