If I upgrade to the new Windows 10, will all the contents of C be lost?

Windows 10 will be released this time and it will be upgraded for free.

I'm thinking of applying, but if I upgrade it, will all the contents of C disappear like formatting and installing windows?

697 2015-06-03 Gentleman

A. 1

The upgrade method is to change only the existing installed windows without formatting.
That's the way I used to apply

Gentleman 10 years ago 0

A. 2

It's okay because it's an upgrade.
I personally don't like the upgrade method because it doesn't install neatly and the traditional slow parts are slowed down.

Gentleman 10 years ago 0

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