Wingrub

If you install Windows on a hard drive with several partitions and operating systems, it is very likely that you will lose GRUB, the start-up agent in charge of starting one or the other. WinGRUB is a small tool that allows you to install GRUB from Windows without having to resort to a Live CD or a back-up disk. Even the least experienced Linux users will find WinGRUB to be the perfect tool for recovering this start-up agent easily and quickly.