I installed Ubuntu. But. I couldn't boot back into windows (not shown at the grub) until I put this into the terminal:
sudo apt-get install lilo
sudo lilo -M /dev/sda mbr
It was a success. I rebooted it and it went right into my windows. But now I can’t boot back into Ubuntu. Then I tried to reinstall and repair the ubuntu. But this showed up. How can I fix this so I can dual boot and switch easily between my windows and ubuntu?