This isn't entirely connected but I believe it's useful nonetheless.
The very first thing you should do after uploading your images to your computer is to back them up. Make copies, preferably on a seperate physical drive. Lightning rarely strikes twice...
Actually, for reference, if you do a lot of editing you'll find it all goes more smoothly if you only use the source images which are on a drive which does not also contain your OS. RAM works so much better this way, to say nothing of disk access times.
Various lenses, SB800 & Manfrotto 190 with 460MG head