Загрузочные диски для восстановления системы

1. Boot-Repair - is a simple tool to repair frequent boot issues you may encounter in Ubuntu like when you can't boot Ubuntu after installing Windows or another Linux distribution, or when you can't boot Windows after installing Ubuntu, or when GRUB is not displayed anymore, some upgrade breaks GRUB, etc.
   http://sourceforge.net/p/boot-repair-cd/home/Home/
2. Linux-Secure-Remix - (previously Ubuntu-Secure-Remix) is a slightly improved Ubuntu disk designed especially to install and use Ubuntu in dual-boot with Windows (or MacOS).
   http://sourceforge.net/p/linux-secure/wiki/Home/
3. Hiren's BootCD
   https://www.hiren.info/pages/bootcd