2927 Views 1 Reply Latest reply: Feb 12, 2010 12:37 PM by Meg St._Clair
There's no reason it should cause you to lose your files. Your music is in your iTunes folder, separate from the iTunes app. However, it is always recommended that you have a back up of any files that are valuable to you. An iPod doesn't count as back up.
Good practice would dictate that you back up any files on your computer that you can't afford to lose before doing a major system update. You can back up your iTunes by dragging the +entire iTunes folder+ to an external drive. This will save everything, including your playlists.
Best of luck.