Hi, I have already posted on this topic, but now I know that this event is due to the Acronis disk suite and I can be more precise about what is going on. I installed Acronis Boot selector from the Disk Director Suite. I wanted a dual boot machine with each XP OS on a separate partition (and eventually a Linux partition later). I partitioned my C drive into a C (the original partition with the OS) and a clean G partition. I then installed XP pro on the new partition but upon rebooting the Acronis OS selector did not show up anymore (as it did before I partitioned the drive) and I could not boot again with the original C drive OS. Only with the new one. The boot screen (the default windows one) gives me a choice between 2 versions of XP pro, one on G drive (the newest one) and one on the C drive (the older one). When I try to boot with the C drive partition I get the following Message: System32\hal.dll missing Now I believe that this file is missing because I found that the entire system files have been moved inside the bootwiz folder. Question: How do I restore the OS selector to show up at boot? How do I restore the OS on my C drive? Thank you, I always liked the reformatting capabilities of Acronis Suite, but this is the first time I use the boot selector and things are not going too well. I read the fix in the FAQ regarding BOOTWIZ, but I doubt it will work with my setup.