So originally I had installed Windows 7. Then a couple of weeks ago I installed Debian. I now wanted to try Ubuntu so I installed it without taking to much care for the booting process, I let Ubuntu figure that out. In the installation process, Ubuntu detected Debian succesfully, but did not mention to have found Windows. I thought that was not ideal, but I went on with it, and now I can't boot windows. I know there are some questions here and posts on Ubuntu.org to recover Windows booting, but I think my situation may be special, I'm trying to use 3 operating systems, people normally use one Windows (the one preinstalled on the computer) and one linux distro. I don't know how to configure bios to do that.Can you point me to some help for my particular situation? How to install even more distros?I know how to do these things: Using basic Gparted or other Disks (a Ubuntu and Debian native application) to reduce, create partitions, and basic things about formats like ext4 vs fat32. But I don't know how to use mbr or grub I don't understand very well how they work, how they have to be alerted of operating systems on the computer.EDIT a 3 days after problem: Suddenly today I turned on the computer and it offered more options for booting, the same grub2, but now there is Windows 7 to choose (and it worked) and also Memtest86. So, my guess is, it fixed itself, because of the restarting and updating (Ubuntu downloaded two times software by itself, the first time 180 MB, the second less). So no idea, but is now fixed.Thanks for the suggestions, I had no time for implementing them!
Easy way to boot Windows and more than 1 linux distros?
ubuntu;dual boot