Windows automatically tries to complete more of the update process in the background while you use your PC. This significantly reduces the time your PC will be offline (or unusable) during the update, although it might temporarily use more disk space to complete the update. Windows follows three different feature update paths, depending on the amount of disk space currently available. For more info, see How reserved storage works in Windows. Note: For devices with reserved storage, an update will first use the reserved storage space before using other disk space.
