What happens if i click "restart now" on the windows update-windows 10 upgrade.?

Question

i just finished scheduling the time for the upgrade but when i closed the window, the windows update was still there (refer to the pic below) and there's this "restart now" button. if i click it, will it start the upgrade and ignore my scheduled upgrade or will it do something else, i don't know, like maybe finish/finalize the windows 10 upgrade preparation? it says that "You need to restart your pc to begin installation" so if i click restart now i'm afraid it'll start the upgrade cause i haven't backed up my files yet.

Answer 1

At some point today your going to have to close down and when you boot your computer up later it will update, Period. so Back Up your files now before you close down If you can, if you can't do a backup that's tough on you if you loose your data.....

Answer 2

Take a copy of your files before clicking the button.

Answer 3

If you click yes, it will immediately start the update.

Answer 4

It will start installing, just like it says.