I've been been Using OS X for about a year now after switching from windows and I just made a startling discovery. When you copy a folder to another location with the same folder name you are prompted as to whether you should stop or replace the folder. I usually clicked replace because I thought the behavior would be similar to windows, in which only FILES of the same name inside the folder are replaced, leaving any files that are not similar intact. Mac OS X replaces the entire folder with the one you're copying obliterating any files inside the folder that are different. How can I simply replace older files with the same name inside a folder without destroying any files that may be already there (renamed backup files for instance). I'm not sure if what I'm trying to explain is clear. I'm hoping someone can give me a quick solution before I lose any more files.