Use existing File History backup with new W10 install

[McGraw]

If I reinstall Windows 10 on my C drive, how do I point Windows 10 back to my existing backup which contains the important stuff (my D drive contents)?

Whenever I've reinstalled in the past it seems to want to start a fresh backup and I won't have access to my off site backup for a while (would have to delete existing backup to make room).

Thanks.

 

[McGraw]

Thanks.

I just want to be able to do a clean install.