My mom has a windows partition and a ubuntu 12.04 partition on her laptop, and we wanted to set grub to automatically load windows for ease of use. To do this I used steps from this question: http://askubuntu.com/questions/66070/how-to-set-windows-bootloader-as-default-bootloader the third answer (a two part tutorial) were the steps I had her follow, and now the windows partition is not showing in the grub. I used update-grub and I got an error message after it showed some of the partitions; cannot find a grub drive for dev/sda1check your device.map. So I'm thinking that when she went through the steps of the tutorial she didnt notice that and when she went through with the other steps it messed something up. That or the tutorial is what ultimately created the problem. So I have no idea how to make the ubuntu partition reappear as a selection in the grub menu (I think it has grub version 1.99 if that helps any)
I used a tool found on ubuntu's help section that fixed the issue.
Here is a link to the tool I used.