Red hat not displayed in boot options

view full story

http://www.linuxquestions.org – Hi EveryOne, I had a dual boot system with ubuntu and windows running fine, while using ububtu grub loader. Now i installed red hat on the same computer and mentioned to install grub in the first boot partition sector. Now while starting the the computer i see only the previous options to boot into eithre windows or ubuntu. I dont see any option for red hat. Please guide me to modify the ubuntu loader to read grub Thanks in advance (HowTos)