Can the MSI Wind U100x run Windows 10?

You see, my grandfather gave this netbook to me. He bought a newer Lenovo and gave me this one. Now, before he gave it to me, he upgraded it to Windows 7 (it was on XP originally), and it works fine.
Now I've been given a notification that, when available, Windows 10 will be free to me. I reserved my free copy almost immediately, but now I have concerns. Can it even run Windows 10? I don't want it to break.

You wouldn't have gotten the notification if Microsoft didn't think you could run it. Microsoft's servers scanned all systems for compatibility before sending the notification down. If their scan had come back giving them reason to believe you couldn't, then you wouldn't have gotten the RSVP to reserve your copy. So quit worrying. You will be fine.

Read about Win 10 here. It should answer all your questions

http://www.microsoft.com/...ows-10-faq