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I had Windows 7 and Ubuntu on my hard drive working without any problems, but after installing a program called "Acronis True Image" and using its "try and decide" function, I lost GRUB.
How do I recover the Ubuntu installed on my hard drive? Do I use my USB device or CD?
Edit: Ok, thanks for your answers, but I think I was not very clear ... happens every time I run the application "Try and decide" from "Acronis True Image" I lose the GRUB, what I want is to boot the ubuntu operating system on my computer from my USB Device whenever I need it without having to restore the GRUB increasingly