I've just upgraded to Windows 10

Re: is it free to upgrade?

--- I'm really interested to know though what happens if you need to format/re-install in a years time. It seems like the update is built in (as most Windows updates are). I'd personally prefer to download an exe/zip to save just in case.[/QUOTE]

All your questions answered here

https://www.microsoft.com/en-us/windows/windows-10-faq?ocid=win10_auxapp_LearnMore_win10faq

 

Re: is it free to upgrade?

I'm guessing the product key will be valid forever so you'll be able to reinstall at any time on the same machine.

 

I can't think what Microsoft were thinking when they thought Win8 was anything other than a total sack of ****. You'd have thought they'd have learned something from their Win ME abomination.