I had pre-installed manufacturer WIN 8 software on my computer. I made recovery disks. (you are only allowed one copy) I think I made a mistake in upgrading to the 8.1 version. I thought it was just an update. I didn't realize it was going to be so involved. If my computer fails to start, I don't know if I should make just a recovery disk, or if I can get a COPY of the WIN8.1 version. It said once you go to 8.1, you can't go back. I didn't like that. Can anyone tell me more about what single copy I can make, and how to do it? If you make a copy to a flash drive, and it fails, you are up a creek. So I would rather have a dvd copy. But just for if WIN 8.1 won't start, a bootable pen drive would be nice. But once again, it said only one copy. This is confusing to me. I don't have an external hard drive, or anything to make a full back up on yet. I do have my pictures, and documents saved to a pen drive though.