I'm new to all this stuff on forums and stubborn too. It's probably because I'm OLD. Anyway, I have been paranoid about loss of sytems over the years, having experienced several crashes and hard drive failures. And so I have several hard drives in my old machine and two in the new one, plus externals. I have used software like Paragon Partition Manager to do complete copies of drives/partitons, etc. I also keep my CD covers in separate folders, like you. On top of that I keep library backups, again in a separate folder. If I am reading your post correctly though, it sounds more like a synchronizing issue. All I can suggest is that you copy all of your files onto a new drive; then change the drive letter on the old one to say X:; then change to letter assigned to the new drive to that which was on your old drive originally (assuming you have all of your music files on a separate drive). If you always adopt a consistent system of attributing a drive letter (or partition letter) like M: for music, and you have backups of the libraries, you should not run into any problem in the event of a crash. One word of warning, don't use letter A: or B: as I have just discovered that MC 15 does not like it even for a CD drive. Good luck. Terry