Three systems ...... No response after installation of fedora

Three systems ...... Fedora does not respond after installation-general Linux technology-Linux technology and application information. The following is a detailed description. I want to install a fedora11 with six CD disks ..................

My original host has xp and ubuntu, but I want to install fedora11. The installation process goes smoothly. After the installation, ask me to restart. I restarted, but I cannot see any changes, the legendary fedora boot interface does not appear, which is exactly the same as the usual boot. I still choose ubuntu and xp, but none of the information about fedora appears. I suspect it is a problem With grub, so, I went to the fedora File System under ubuntu and set grub. conf or menu. in the list, start the title of fedora and add it to grub under ubuntu. After the reboot, it is found that the fedora option is added to the boot interface. However, click it to display the following:

Error17: Cannot mount selected partition

Press any key to continue...

How can this happen? I put the cannot mount selected partition information in the search engine for search, but it seems that none of them work. What's the problem?

I have also tried installing the system like me ~~~!!