can't access fedora after installing ubuntu

[daudiam]

I installed Ubuntu after installing Fedora. Now there is no boot menu from which to select a OS. Ubuntu directly loads on startup. Now I think that I have to make changes in the menu.lst file (i have ubuntu 9.10) and add the contents of the fedora's grub.conf file there (or the menu.lst fil, I'm not sure). But, I am not able to open these two files. It says that u don't have permission to see thier contents. If I can't access them, how can I boot my Fedora through Ubuntu.

SOmeone said that I should login as the root. But, when I mount the directory conataining Fedora, it does ask for my password and I am able to enter into it. But the directory inside the home directory as well as the above 2 files have a cross marked onto them. What should I do ?

Note : Ubuntu is in a logical partition while Fdora is a primary partition

[ajgreeny]

Ubuntu 9.10 will not have a menu.lst file any more but all the configuration of grub will be from /boot/grub/grub.cfg, which is written when you run
sudo update-grub in terminal from other configuration files contained in /etc/default/grub and /etc/grub.d

It is possible that Ubuntu may be able to find fedora if you use the update-grub command just shown, but I suspect the problem is that by default fedora puts everything on LVM partitions and they are not directly readable by ubuntu without a few extra packages. Search "lvm" in synaptic and you may find several that are needed and will allow you to access fedora.

[oldfred]

I have several links to others with Fedora:

Fix for Fedora:
sudo apt-get install --reinstall libdebian-installer4

[SOLVED] Grub 2 Fedora Install not seen by 40_custom
http://ubuntuforums.org/showthread.php?t=1343779
See posts 26 & 27
http://ubuntuforums.org/showthread.php?t=1388777
menuentry "Fedora 2.6.31.5 on sda7" {
recordfail=1
if [ -n ${have_grubenv} ]; then save_env recordfail; fi
set quiet=1
insmod ext2
set root=(hd0,7)
search --no-floppy --fs-uuid --set a2cb340e-b3df-44e3-a602-52d0cb1201c5
linux /boot/vmlinuz-2.6.31.5-127.fc12.x86_64 root=UUID=a2cb340e-b3df-44e3-a602-52d0cb1201c5 ro quiet splash
initrd /boot/initramfs-2.6.31.5-127.fc12.x86_64.img
}

http://ubuntuforums.org/showthread.php?t=1367305
If the linux has no bootloader, the os-prober will look for the kernel file name that starts with vmlinu[zx] and the initrd file name that starts with initrd.
In my case, I have installed fedora without bootloader and the initrd file name starts with initramfs. I have made a simple change to the os-prober by make it looking for the file starts with initr instead of initrd.

[daudiam]

Thanks a lot to everyone who helped

I finally got it to work

I copied the code from fedora's menu.lst file
I gave the following command (after mounting Fedora)

/media/Fedora/boot/grub

then, sudo vi menu.lst

I found something of this type there :

title Fedora (2.6.31.5-127.fc12.x86_64)
root (hd0,0)
kernel /boot/vmlinuz-2.6.31.5-127.fc12.x86_64 ro root=UUID=8451bdcb-531c-44e6-97a4-88ed2af20ad2 LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYBOARDTYPE=pc KEYTABLE=us rhgb quiet
initrd /boot/initramfs-2.6.31.5-127.fc12.x86_64.img

I compared it to Ubuntu's grub2's /boot/grub/grub.cfg 's way of doing the same thing. I found that the following reformatting will make it similar to ubuntu's :

menuentry "Fedora (2.6.31.5-127.fc12.x86_64)"
{

set root=(hd0,0)
search --no-floppy --fs-uuid --set 8451bdcb-531c-44e6-97a4-88ed2af20ad2
linux /boot/vmlinuz-2.6.31.5-127.fc12.x86_64 ro root=UUID=8451bdcb-531c-44e6-97a4-88ed2af20ad2 LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYBOARDTYPE=pc KEYTABLE=us rhgb quiet
initrd /boot/initramfs-2.6.31.5-127.fc12.x86_64.img
}

This I DID NOT ADD IN grub.cfg but in /etc/grub.d/40_custom

I saved the file and exited. Then, I typed

update-grub

On restarting, I kept the shift key down, I had the Fedora option there.

[workdowg]

My solution is a little messier...but worked for me.

Boot Ubuntu.

Install lvm2:
$ sudo apt-get install lvm2

Load the necessary module(s):
$ sudo modprobe dm-mod

Scan your system for LVM volumes and identify in the output the volume group name that has your Fedora volume (mine proved to be vgacer-fedora):
$ sudo vgscan

Activate the volume:
$ sudo vgchange -ay vgacer-fedora (replace with what you got from vgscan)

Update grub:
$ sudo update-grub

You should now have a menu option(s) for your Fedora installation...