Windows How Can Windows 10 rollback to Windows 8.1?

[Bossphoe]

When upgrade to win 10, we have a month to downgrade to Windows 8.1 if Windows 10, after one month, how can windows 10 rollback to windows 8.1? Now I have installed windows 10 preview, i would like to know this question.

 

[cooljeba]

you need to go to reset PC option.. there you will have the option to roll back to 8.1 . But that option will be available only for a month..

 

[Kevin Lane]

Will it work if we make an installation disk of 8.1 before upgrading and when we need to rollback just re-install with it?