Hi all, new to TechSpot and message boards in general. I have been reading threads, threads, and more threads and are finding some answers, thanks. One answer I have not found, here, Microsoft, or anywhere on the web: If I replace the ntfs.sys file under Windows XP Pro, will I lose my documents, pictures, etc.? I can boot my computer with the installation disk to the point of entering the recovery console only. Safe Mode and plain "turn on the computer" boot both give me the message: Missing or corrupt file: ntsf.sys In recovery console, I can get directories for all my drives and directories. And I see that the ntsf.sys file is not missing. I assume that it is corrupt. But before replacing it, I NEED to know if this will lose me my data files. Thanks in advance.