Windows 10 Recovery. Select the option boot from the recovery disk in the advanced boot menu that appears. In the search box next to the start button search for create a recovery drive and then select it.
For a limited time after upgrading to windows 10 you ll be able to go back to your previous. Try signature mode which expands beyond ntfs recovery and caters to your storage device needs. Should you use the windows 10 insider previews.
If this menu doesn t appear.
If windows cannot load normally you ll see those startup options automatically. You might be asked to. When the tool opens make sure back up system files to the recovery drive is selected and then select next. Wait for windows to pick up the usb drive or dvd.