I'm absolutely new to Linux.
I installed Ubuntu 15.10 on Windows 8.1, I chose the option to install alongside windows, but when I finished the installation I cannot find the Windows option in the boot menu.
I can find my windows partitions, but some of them (including C: drive) cannot open [fixed, I can now see all my partitions and files, including windows files].
I know that this question has been asked a lot, I found many discussions but I cannot find a way to solve the problem.
I used boot-repair but it didn't solve the problem instead I got this log
Thank you very much in advance.