So my vostro 3558 came with windows 7 installed. However, on the bottom of the laptop, near the service tag, it says windows 8 and it also came with an 8.1 red operating system recovery disk, which says on the disk label, "already installed on your computer".
I have 3 questions.
1. First, why does it have windows 7, and labled as windows 8?
2. If I had to replace my hard drive, can this disk be used to install windows 8.1 on a new hard drive, or will it only reinstall windows 7 on it?
3. Can I use this disk to upgrade from windows 7 to windows 8.1?