folks, I don't know what I did but. this is what happened. I went format c:\ and installed win xp home.I wanted to install a second OS (xp pro)so I used acronis partition expert to create another partition which I called E.Now I was on automatic mode and when u start u have 3 choices.either u create a logical a primary or active partition. So it said that logic was good only for storing data and primary or active were good also for installing operation systems.I went for primary.(I later realized that I had 2 primaries not sure if this was the prob to begin with)-After I was done with my newly created partition, I rebooted and I got this NTLDR error. so I rebooted from my cd and installed xp prnce Xp pro was installed and I rebooted, my XP home was not longer there.That is, I could not longer choose, on reboot, between xp home and xp pro. All the directories are there but I don't know what to short of starting everything from scratch deleting everything. Any suggestions ? P.S, If I want to install 2 os on 2 diff partitions.the partitions have to be either, active,primary or logic ? if yes which what should I choose ? thanks..