After installed just fire up a LiveISO. I like Parted Magic.
edit /etc/grub/grub.conf
[root@localhost ~]# cat /boot/grub/grub.conf # grub.conf generated by anaconda # # Note that you do not have to rerun grub after making changes to this file # NOTICE: You have a /boot partition. This means that # all kernel and initrd paths are relative to /boot/, eg. # root (hd1,0) # kernel /vmlinuz-version ro root=/dev/mapper/isw_eajhcidchc_Volume0p3 # initrd /initrd-version.img #THE BELOW LINE WAS COMMENTED OUT AND UNCOMMENTING IT FIXED THE ISSUE### boot=/dev/mapper/isw_baiehbdebb_Volume1 default=0 timeout=5 splashimage=(hd1,0)/grub/splash.xpm.gz hiddenmenu title CentOS (2.6.18-194.11.1.el5) root (hd1,0) kernel /vmlinuz-2.6.18-194.11.1.el5 ro root=LABEL=/ initrd /initrd-2.6.18-194.11.1.el5.img [root@localhost ~]#