graphical installaion not working from hard disk insta metho

[sekhar_vrc]

Dear sir

             I am trying to install redhat linux 9.0 from hard disk.
i have following files on my hard disk
                disk1.iso
                disk2,iso
                disk3.iso
           

            I am booting through a boot cd and i am getiing a message
that graphical installation is not supported in hd installation.

           However i have installaed the same successfully using gui installation
                              from
                                           1) cdrom
                                           2) nfs
                                           3) ftp
                                           4) http
note: I have installed Fedora core-ii from hard disk using graphical installation method
         successfully.
           
          Is it a limitation in case of Redhat 9.0 or am i committing any mistake?
         Please guide me

 sekhar