Hi, Also check this link [URL] This link is the user guide. [URL]  And yet another [URL] I bought a 2950 from Ebay last month but never intended on installing a Windows OS but I downloaded the DVD ISO file from here [URL] and installed with no problems they email you a key to register the OS. I updated the bios after that and no issues. You never said how many hard drives you have but be sure you have two or more. So far I installed VMWare ESXi that was supported on 2950 but I settled with XenServer 6.5.0 And i have 2003 Server running as a VM that works fine.  I have a Dell XPS workstation that I recently reinstalled Windows 7 on but I only had one drive connected and the OS couldnt see any hard drives. After connecting a second drive and not using raid on this machine I was able to install Windows. I looked for the Dell Live ISO version for 2850 but there isn't one. That has diagnostic tools on it. When you by a Dell it has pre installed in a hidden partition on the drive a utility you can run but there really isn't any way I know to install that. Usually F12 key will give you a list of items to boot from and if it's not there on the drive it can't run. The diagnostic utility that is.  
Hello, I have been trying to install windows server 2003 on  a few servers I received a few weeks back.  The system has RAID set up and it is enabled but when it attempts to install WS it says there are no hard drives. I was trying to download "Updating Dell Power Edge servers via bootable media / ISO" but there are no downloads for a 2850. Also I tried to download this "Dell Systems Build and Update Utility"  but most of the time it stops and says download failed...
Dell Power edge 2850 will not let me install windows server 2003