grub not showing ubuntu partition

[Tanmoy Chatterjee]

Hello Everybody,
Recently I have installed Fedora 13 in my desktop, along side previously
installed Ubuntu 9.04.
PROBLEM:
1) After installing Fedora, rebooting the system does not come up with usual
grub list of OS's and I can't log into ubuntu. I can only log into fedora
though I can find the ubuntu partition and even browse my files there.

Possible Cause:
1) At the time of fedora installation there was a step where the
installation program asked to select/deselect
INSTALL BOOTLOADER ON dev/sda and come up with an edit/add option in boot
loader operating system list.
2) As an end user I prefer the default option for the installation which in
this step assumes there is no other OS in the system and thereby ignores my
ubuntu partition on the grub list.
3) Kindly give me some step by step instruction other than reinstalling
everything to boot into ubuntu.

I have gone through the fedora installation guide where some command line
solutions have been suggested.
Can anybody suggest some other solution for a novice like me?

Thanks in advance for any suggestion
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