I realize this question has been asked by others but I can't seem to find a fix to my problem. I had Ubuntu 13.10 dual-installed with Windows 8. Everything was working perfectly, until I accepted the update to Windows 8.1. Now I can't boot into Ubuntu unless I reboot from the disk. I know Ubuntu is still installed because all of my personal settings and programs are still in place. But I want to have the option of which OS to boot at startup like I used to. (Is this the "grub" menu?) I've tried many suggestions with no success. Let me clarify, I'm new to programming/etc. Frankly, the answer I need may have already been posted but I just don't understand it. Who knows. I initially installed according to the instructions here: http://www.everydaylinuxuser.com/2013/09/install-ubuntu-linux-alongside-windows.html
When repair suggestions didn't work I tried re-entering the terminal commands at the end of the instructions at the above website. After re-entering those commands, boot repair gave me the following:
http://paste.ubuntu.com/7225235/ The boot files of [The OS now in use - Ubuntu 13.10] are far from the start of the disk. Your BIOS may not detect them. You may want to retry after creating a /boot partition (EXT4, >200MB, start of the disk). This can be performed via tools such as gParted. Then select this partition via the [Separate /boot partition:] option of [Boot Repair]. (https: //help.ubuntu .com/community/BootPartition) You may want to retry after deactivating the [Backup and rename Windows EFI files] option.
Hopefully, this is enough information for someone out there to know what's going on and give me a solution. Thank you in advance for any and all assistance in this matter. Please keep in mind, as I said, I'm learning but I'm still new to the whole programming world so try to give me a break on the jargon if you can. Granted I can do more research to understand if necessary. Thanks again.