I'm sorry, I don't think I explained myself correctly. I guess what I need to ask is can I have two epubs of each book in the folder made by Calibre, or will the program overwrite the first made epub with the second made epub?
In other words, if I make an epub of a Pride and Prejudice formatted for my mom's Jetbook, then I make an epub of Pride and Prejudice formatted for my friends Sony 600, when I make the second epub will it overwrite the first epub I made? Or should I move the first epub to another folder before making the second?
Sorry for not explaining myself better!