The day has finally come my Update to download the new Windows 10 Home, but I'm undecided
There are two, I do not trust nor hair: roll:
Is it possible to return to Windows 7 after installing 10?
No, it is not possible; but you can from Windows 7 to create a system image and recharge if the W10 does not convince
What happens when you install the 10 permanently deletes the 7?
Is it advisable to Upgrade or more to install Windows 10 "clean"?
It is always preferable to clean
What if it is installed in a clean still free?