Howtogeek shows you how to restore the Wubi Ubuntu bootloader
Has Ubuntu disappeared from your Windows Boot Manager list after installing it with Wubi? Heres how you can quickly restore it and use your Ubuntu as before.How To Restore the Wubi Ubuntu Bootloader
Wubi makes it easy to install Ubuntu from your Windows computer and keeps you from messing up your Windows Boot Loader. It simply adds an Ubuntu entry to your Windows boot loader, and you can manage it directly from Windows.