I don't know what I am doing(GRUB2)

[Fitzy]

Hello,

This is my first time DualBooting anything, and I have no idea how to configure my MBR. I have Ubuntu 11.04 as my primary and Fedora15 partitioned. However I don't know how to get Grub to tell my MBR that there are two OS's on the drive. I have tried for about 4 days now and all I can find are people talking about tools to use, and not talking about how to really configure anything.

I have Grub Customizer and StartUp-Manager installed, but I am familiar with command line if that is how I have to get it done.

Please help I am losing my mind, I just want to properly DualBoot.

[yancek]

Which did you install last Ubuntu or Fedora?
Which bootloader are you using, Ubuntu or Fedora?
Fedora uses Grub Legacy and Ubuntu uses Grub2. You can boot either with either but it's generally easier to boot a Grub Legacy distribution from Grub2.
It would be helpful to know which you installed last or which you installed to the mbr.

Fedora usually does not detect other Linux systems so if you installed it last to the mbr you will have to manually configure it.
Post back with answers and someone will be able to help you.

[allwimb]

you don't have to configure anything if you use Grub2 it automatically detects the OS and generate the config file.

[Fitzy]

I am using Grub2 I told Fedora not to install the bootloader, and it did not automatically update. I have Ubuntu installed as the primary and and it is Physical, while fedora took up the other half of my disk logically. I have a feeling that is part of it.

[Fitzy]

I just wanted to let you know I posted

[yancek]

Did you install Ubuntu after Fedora? If so, it should have detected Fedora. You would obviously have to update grub2 on Ubuntu if you installed Fedora after Ubuntu. There would be no way for the Ubuntu Grub to know you installed another system if you don't update. You don't indicate whether you can boot either system? If you can boot Ubuntu, run "sudo update-grub" (without quotes) from a terminal. If that doesn't do it, run sudo os-prober and try the update command again. If you get an error with the os-prober, you may have to install it from the repositories as I don't believe it is installed with the base system?

It would be helpful if you indicated what, if anything, you can boot. If you are able to boot Ubuntu look at the /boot/grub/grub.cfg file. If you don't understand it, post it here.