System only boots to read-only

[Doll, Margaret Ann]

This is a RedHat server 6.4

When I tried to reboot the system, it comes up as readonly.  See the
attached file with more details.

I tried to use the installation disk to recover the system, but again the
chroot command is not available and /mnt/sysimage comes up readonly.

Is there a simple way to fix the problem?  Luckly all the data in /home,
/tycho-1 and /raid seem to be ok.