I have Windows 7 as base operating system, and I have installed Ubuntu 13.10 on it.
A few days later, my Windows 7 became corrupted. I installed Windows 7 again, but when I start the computer, there is still an option for Ubuntu in the boot manager. When I select the option for Ubuntu in the boot manager, it is not working(obviously due to data loss), because I installed Ubuntu in a partition in which window 7 is present. If I format the C(drive) as usual all data will be lost & I will lose ubuntu also but the problem is that option how can i trouble shoot that problem,so please tell me how to remove the option for it to install another copy of Ubuntu.