F Murtz wrote:
John Doe wrote:
F Murtz wrote:

And things did not work properly on my Vaio laptop and it did not
revert, had to wipe everything and reinstall 8.1 from scratch.

That's what Macrium Reflect is for. Life can be so easy...

Win 10 is supposed to do it for you and revert seamlessly if done before
a couple of weeks

Actually, no.

The seamless part, is anything contained in Windows.old
is preserved very nicely. No argument there.

However, they modify the contents of your Program Files,
removing programs as they see fit, which means an
attempt to revert, they never put the contents
of Program Files back.

This is why we use backup software here. *Backup* before
your "free" Upgrade installation! That's how you revert,
with absolutely no issues at all. A backup copy will
keep your Program Files, the way you had it.

HTH,
Paul