FC5 permissions problem cdrom

[Tom Poe]

Hi, All:  I reinstalled FC5 desktop option.  Did LVM to use 2 disks, and
completed install.  I then used yum to update.  Now, yum is trashed.  I
then loaded FC5 install #1 and shut down, then booted, but my CD is
bypassed to hard drive install.  I can't mount the CDROM.  I added cdrom
to /etc/fstab, but that didn't help.  How can I force my computer to
read FC5 install #1 on boot?  My bios calls for CDROM to be read first.
It acts as if that is being overridden? Any help appreciated.
Tom